2023
- 1 team
2022
- 2 teams
2019
- 2 teams
2018
- 2 teams
2017
- 2 teams
2016
- 2 teams
2015
- 2 teams
2014
- 2 teams
2013
- 2 teams
2012
- 2 teams
2011
- 1 team
2008
- 5 teams
2007
- 7 teams
2006
- 8 teams
2005
- 7 teams
2004
- 7 teams
2003
- 6 teams
2002
- 11 teams
2001
- 8 teams
2000
- 7 teams
1999
- 9 teams
1998
- 3 teams
1996
- 6 teams
1995
- 8 teams
1994
- 7 teams
1993
- 7 teams
1992
- 7 teams
1991
- 8 teams
1990
- 6 teams
1989
- 6 teams
1988
- 1 team
1987
- 1 team
