2023
- 9 teams
- 6 brands
2022
- 20 teams
- 11 brands
2021
- 20 teams
- 8 brands
2020
- 20 teams
- 10 brands
2019
- 20 teams
- 10 brands
2018
- 20 teams
- 10 brands
2017
- 20 teams
- 10 brands
2016
- 20 teams
- 11 brands
2015
- 20 teams
- 9 brands
2014
- 20 teams
- 10 brands
2013
- 20 teams
- 14 brands
2012
- 20 teams
- 13 brands
2011
- 21 teams
- 14 brands
2010
- 20 teams
- 12 brands
2009
- 18 teams
- 9 brands
2008
- 19 teams
- 11 brands
2007
- 18 teams
- 9 brands
2006
- 19 teams
- 10 brands
2005
- 22 teams
- 14 brands
2004
- 22 teams
- 12 brands
2003
- 23 teams
- 14 brands
2002
- 21 teams
- 13 brands
2001
- 26 teams
- 16 brands
2000
- 25 teams
- 16 brands
1999
- 22 teams
- 13 brands
1998
- 14 teams
- 9 brands
1997
- 15 teams
- 8 brands
1996
- 15 teams
- 11 brands
1995
- 12 teams
- 8 brands
1994
- 14 teams
- 10 brands
1993
- 9 teams
- 6 brands
1992
- 18 teams
- 10 brands
1991
- 16 teams
- 9 brands
1990
- 6 teams
- 6 brands
1989
- 6 teams
- 5 brands
1988
- 1 team
- 1 brand
1985
- 1 team
- 1 brand
1984
- 4 teams
- 2 brands
1983
- 6 teams
- 2 brands
1982
- 2 teams
- 2 brands
1981
- 1 team
- 1 brand
