German Bundesliga had 18, France had 18 teams even Serie A once had 18 teams now all top 5 has 20

2002, not 2003 for the 15

up to 15 in 2003, then 16 in 2007, before going to 17 in 2023

It wend down to 17 in 1999, and 14 in 2000

the 1997 season had 22 teams between the 2 comps

There were 20 teams in the NRL/ARL in 1995, 1996 and 1998. 1997 had 2 seperate leagues after a split

I hope none one will do as Argentina few years ago, add 30 teams 10 years ago in to level and have quiescent in relegation , otherwise River never would leave