Which U.S. baseball stadium holds the record for the highest attendance on an annual basis?

Typically it is the Dodgers who have the highest attendance rate this year again. Dodger Stadium can hold up to 56,000 fans for a game making it the second-largest stadium in MLB.

Rank Team  Average Games Total Attendance
1 Dodgers   48,068  53   2,547,648
2 Yankees   41,381  58   2,400,125
3 Cardinals 41,205  54   2,225,086
4 Padres    40,672  54   2,196,310
5 Braves    39,510  57   2,252,089

https://sports.betmgm.com/en/blog/mlb/mlb-teams-most-fans-highest-attendance-this-season-sgc/

The 1993 Colorado Rockies playing at Mile High Stadium have the highest single season attendance Record at 4,483,350 total on the season and a per game average of 55,350
https://www.baseball-almanac.com/teams/rockattn.shtml

The 2005-2008 Yankees put together a string over for four consecutive seasons of having over 4 Million annual attendance and over 50 thousand per game at Yankee Stadium.

2008 : 4,298,655 : 53,070
2007 : 4,271,867 : 52,739
2006 : 4,248,067 : 52,445
2005 : 4,090,696 : 50,502

https://www.baseball-almanac.com/teams/yankatte.shtml

Last but certainly not the least... The Dodgers have had one million in attendance every season since 1945!!
https://www.baseball-almanac.com/teams/laatte.shtml