2023
- 1 team
2021
- 1 team
2020
- 2 teams
2019
- 7 teams
2018
- 14 teams
2017
- 13 teams
2016
- 8 teams
2015
- 3 teams
2014
- 6 teams
2013
- 4 teams
2012
- 7 teams
2011
- 8 teams
2010
- 8 teams
2009
- 7 teams
2008
- 10 teams
2007
- 8 teams
2006
- 12 teams
2005
- 14 teams
2004
- 13 teams
2003
- 13 teams
2002
- 13 teams
2001
- 14 teams
2000
- 14 teams
1999
- 20 teams
1998
- 24 teams
1997
- 20 teams
1996
- 13 teams
1995
- 11 teams
1994
- 7 teams
1993
- 8 teams
1992
- 8 teams
1991
- 8 teams
1990
- 11 teams
1989
- 14 teams
1988
- 10 teams
1987
- 13 teams
1986
- 15 teams
1985
- 14 teams
1984
- 17 teams
1983
- 14 teams
1982
- 16 teams
1981
- 8 teams
1980
- 7 teams
