While 2012 was the year that saw “Good Morning America” overtake “Today” in the ratings, 2013 begins with all three shows shedding viewers in the crucial A25-54 demo.

Compared to the same week last year, “GMA” is down -4% in younger viewers, “Today” is down -20% and “CBS This Morning” is down -6% (vs. its debut week last year). But for the second week in a row, “Today” takes the younger viewer crown with a slim 4,000 A25-54 viewer lead, improving from the week prior.

“GMA” was the only show to grow in total viewers: up +3% with a +459,000 viewer lead on “Today,” which is down -18%. “CBS This Morning” was flat in total viewership.

The averages for the week of January 7, 2013:

• Total Viewers: ABC: 5.010M / NBC: 4.551M / CBS: 2.703M

• A25-54 viewers: ABC: 1.936M / NBC: 1.940M / CBS: 1.042M