CBS’ Blue Bloods is a success in viewership but the demo ratings could certainly be better. Is this the year that they improve — or decline so that the TV show will be cancelled? Stay tuned to find out.

The third season of Blue Bloods typically airs on Friday nights at 10pm on the CBS network. The cast includes Tom Selleck, Bridget Moynahan, Donnie Wahlberg, Will Estes, Len Cariou, and Jennifer Esposito.

Below are the TV show’s latest ratings for the 2012-13 season, the best way to tell if Blue Bloods is going to be cancelled or renewed for season four.

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

Final season averages: 1.4 rating in the 18-49 demographic with 10.83 million total viewers.

Episode 03-23: Friday, 05/10/13
1.1 in the demo (-15% change) with 10.30 million (+3% change).
Season averages: 1.40 in the demo with 10.83 million.

Episode 03-22: Friday, 05/03/13
1.3 in the demo (0% change) with 10.02 million (-4% change).
Season averages: 1.41 in the demo with 10.85 million.

Episode 03-21: Friday, 04/26/13
1.3 in the demo (0% change) with 10.46 million (-2% change).
Season averages: 1.41 in the demo with 10.89 million.

Episode 03-20: Friday, 04/12/13
1.3 in the demo (-13% change) with 10.65 million (-3% change).
Season averages: 1.42 in the demo with 10.91 million.

Episode 03-19: Friday, 04/05/13
1.5 in the demo (+7% change) with 10.99 million (+6% change).
Season averages: 1.43 in the demo with 10.92 million.

UPDATE: Blue Bloods has been renewed for a fourth season by CBS.

Episode 03-18: Friday, 03/15/13
1.4 in the demo (0% change) with 10.41 million (-3% change).
Season averages: 1.42 in the demo with 10.92 million.

Episode 03-17: Friday, 03/08/13
1.4 in the demo (0% change) with 10.72 million (-4% change).
Season averages: 1.42 in the demo with 10.95 million.

Episode 03-16: Friday, 02/22/13
1.4 in the demo (0% change) with 11.21 million (+5% change).
Season averages: 1.43 in the demo with 10.97 million.

Episode 03-15: Friday, 02/15/13
1.4 in the demo (-7% change) with 10.73 million (-5% change).
Season averages: 1.43 in the demo with 10.95 million.

Episode 03-14: Friday, 02/08/13
1.5 in the demo (0% change) with 11.24 million (-2% change).
Season averages: 1.43 in the demo with 10.96 million.

Episode 03-13: Friday, 02/01/13
1.5 in the demo (0% change) with 11.50 million (-1% change).
Season averages: 1.42 in the demo with 10.94 million.

Episode 03-12: Friday, 01/18/13
1.5 in the demo (-6% change) with 11.64 million (+4% change).
Season averages: 1.42 in the demo with 10.90 million.

Episode 03-11: Friday, 01/11/13
1.6 in the demo (+23% change) with 11.22 million (+10% change).
Season averages: 1.41 in the demo with 10.83 million.

Episode 03-10: Friday, 01/04/13
1.3 in the demo (-7% change) with 10.18 million (-9% change).
Season averages: 1.39 in the demo with 10.79 million.

Episode 03-09: Friday, 12/07/12
1.4 in the demo (-7% change) with 11.17 million (-1% change).
Season averages: 1.40 in the demo with 10.86 million.

Episode 03-08: Friday, 11/30/12
1.5 in the demo (0% change) with 11.31 million (0% change).
Season averages: 1.40 in the demo with 10.82 million.

Episode 03-07: Friday, 11/09/12
1.5 in the demo (+15% change) with 11.32 million (+2% change).
Season averages: 1.39 in the demo with 10.75 million.

Episode 03-06: Friday, 11/02/12
1.3 in the demo (-13% change) with 11.05 million (0% change).
Season averages: 1.37 in the demo with 10.65 million.

Episode 03-05: Friday, 10/26/12
1.5 in the demo (+15% change) with 11.06 million (+8% change).
Season averages: 1.38 in the demo with 10.57 million.

Episode 03-04: Friday, 10/19/12
1.3 in the demo (-7% change) with 10.29 million (-2% change).
Season averages: 1.35 in the demo with 10.45 million.

Episode 03-03: Friday, 10/12/12
1.4 in the demo (+17% change) with 10.53 million (+8% change).
Season averages: 1.37 in the demo with 10.51 million.

Episode 03-02: Friday, 10/05/12
1.2 in the demo (-20% change) with 9.77 million (-13% change).
Season averages: 1.35 in the demo with 10.50 million.

Episode 03-01: Friday, 09/28/12
1.5 rating in the 18-49 demographic with 11.22 million total viewers.
Season averages: 1.50 in the demo with 11.22 million.

Compared to last season’s premiere, Blue Bloods was down by 25% in the demo (vs a 2.0 rating) and down by 7% in viewership (vs 12.06 million).

Reference point: The second season of Blue Bloods averaged a 1.7 rating in the 18-49 demographic and 11.32 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 still like the Blue Bloods TV series? Do you think it should be cancelled or renewed for a fourth season?