Here are the latest CSI ratings. In this TV series, D.B. Russell (Ted Danson) joins as Night-Shift Coordinator and helps the team figure out how some unlucky people came to their untimely deaths in Las Vegas. The 12th season of CSI: Crime Scene Investigation typically airs Wednesday nights at 10pm on the CBS network.

These are the TV show’s ratings for the 2011-12 season, the best way to tell if CSI is going to be cancelled or renewed for season 13. Check out our CBS ratings report card to see how this show’s numbers compare with the others on the network.

These figures will be updated as the weeks progress so be sure to bookmark and return to this page:

Final season 12 averages: 2.7 rating in the 18-49 demographic with 11.37 million total viewers.

Episode 12-22: Wednesday, 05/09/12
2.4 in the demo (+4% episode-to-episode change) with 10.73 million; first in the timeslot.
Season average: 2.72 in the demo with 11.37 million.
Demo average rank: #13 of 22 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-21: Wednesday, 05/02/12
2.3 in the demo (-4% episode-to-episode change) with 9.75 million; first in the timeslot.
Season average: 2.73 in the demo with 11.40 million.
Demo average rank: #13 of 22 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-20: Wednesday, 04/11/12
2.4 in the demo (-17% episode-to-episode change) with 9.94 million; first in the timeslot.
Season average: 2.75 in the demo with 11.48 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-19: Wednesday, 04/04/12
2.9 in the demo (+12% episode-to-episode change) with 12.06 million; first in the timeslot.
Season average: 2.77 in the demo with 11.56 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-18: Wednesday, 03/21/12
2.6 in the demo (-7% episode-to-episode change) with 11.38 million; first in the timeslot.
Season average: 2.77 in the demo with 11.54 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-17: Wednesday, 03/14/12
2.8 in the demo (+8% episode-to-episode change) with 11.71 million; first in the timeslot.
Season average: 2.78 in the demo with 11.55 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

UPDATE: CSI has been renewed for a 13th season by CBS.

Episode 12-16: Wednesday, 2/29/12
2.6 in the demo (-10% episode-to-episode change) with 11.30 million; first in the timeslot.
Season average: 2.77 in the demo with 11.54 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-15: Wednesday, 2/22/12
2.9 in the demo (+12% episode-to-episode change) with 11.91 million; first in the timeslot.
Season average: 2.79 in the demo with 11.55 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-14: Wednesday, 2/15/12
2.6 in the demo (+4% episode-to-episode change) with 11.09 million; first in the timeslot.
Season average: 2.78 in the demo with 11.53 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-13: Wednesday, 02/08/12:
2.5 in the demo (-27% episode-to-episode change) with 10.88 million; first in the timeslot.
Season average: 2.79 in the demo with 11.56 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-12: Wednesday, 01/25/12:
3.4 in the demo (+21% episode-to-episode change) with 14.26 million; first in the timeslot.
Season average: 2.82 in the demo with 11.62 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-11: Wednesday, 01/18/12:
2.8 in the demo (-3% episode-to-episode change) with 12.02 million; first in the timeslot.
Season average: 2.76 in the demo with 11.38 million.
Demo average rank: #13 of 21 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-10: Wednesday, 12/14/11
2.9 in the demo (+16% episode-to-episode change) with 12.23 million; first in the timeslot.
Season average: 2.76 in the demo with 11.31 million.
Demo average rank: #11 of 20 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-09: Wednesday, 12/07/11
2.5 in the demo (-4% episode-to-episode change) with 11.14 million; first in the timeslot.
Season average: 2.74 in the demo with 11.21 million.
Demo average rank: #11 of 20 scripted TV shows on the network (Fall 2011 – Spring 2012); tied with Person of Interest.

Episode 12-08: Wednesday, 11/16/11
2.6 in the demo (+4% episode-to-episode change) with 10.60 million; tied for first in the timeslot.
Season average: 2.77 in the demo with 11.22 million.
Demo average rank: #11 of 20 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-07: Wednesday, 11/09/11
2.5 in the demo (-7% episode-to-episode change) with 10.16 million; second in the timeslot.
Season average: 2.80 in the demo with 11.31 million.
Demo average rank: #11 of 20 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-06: Wednesday, 11/2/11
2.7 in the demo (+4% episode-to-episode change) with 10.79 million; second in the timeslot.
Season average: 2.85 in the demo with 11.50 million.
Demo average rank: #11 of 20 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-05: Wednesday, 10/19/11
2.6 in the demo (0% episode-to-episode change) with 10.6 million; second in the timeslot.
Season average: 2.9 in the demo with 11.64 million.
Demo average rank: #10 of 19 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-04: Wednesday, 10/12/11
2.6 in the demo (-10% episode-to-episode change) with 10.93 million; second in the timeslot.
Season average: 3.0 in the demo with 11.85 million.
Demo average rank: #10 of 19 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-03: Wednesday, 10/5/11
2.9 in the demo (-7% episode-to-episode change) with 11.98 million; first in the timeslot.
Season average: 3.1 in the demo with 12.16 million.
Demo average rank: #10 of 19 scripted TV shows on the network (Fall 2011 – Spring 2012).

Episode 12-02: Wednesday, 9/28/11
In week two, CSI dropped by just 3% in the demo to a 3.1 rating with 11.76 million. It was in first place in the timeslot, thanks to a episode-to-episode decline for Revenge. Compared to the rest of the CBS shows, this one’s average is in the middle of the pack.
Season average: 3.2 demo with 12.25 million.

Episode 12-01: Wednesday, 9/21/11
If CBS was hoping that Ted Danson’s addition would attract a big audience for the season premiere, they were likely disappointed. In its new timeslot, the series attracted a 3.2 rating in the 18-49 demographic and 12.74 million viewers. It was in a close second place, behind the debut of Revenge on ABC. CSI was down year-to-year by 6% in the demo and 15% in total viewership. While the series is way past its prime, these numbers aren’t bad.

Reference point: The 2010-11 season averaged a 3.0 rating in the 18-49 demographic and 13.27 million viewers.

Note: These ratings are collected by the Nielsen company and are the final national numbers. These are different from the fast affiliate numbers which are just estimates of the actual ratings and are reported on by most other outlets. The final nationals are typically released within 24 hours of the programming or, in the case of weekends and holidays, a couple days later.

What do you think? Do you like the CSI TV series? Do you think it should be cancelled or renewed for an 13th season?