2003: 291 teams
2004: 292 teams
2005: 340 teams
2006: 344 teams
2007: 344 teams
2008: 340 teams
2009: 348 teams
2010: 344 teams
2011: 352 teams
2012: 400 teams
2013: 400 teams
2014: 400 teams
2015: 609 teams
Attending 2 consecutive years:
2003-2004: 156
2004-2005: 177
2005-2006: 197
2006-2007: 177
2007-2008: 184
2008-2009: 179
2009-2010: 156
2010-2011: 129
2011-2012: 135
2012-2013: 166
2013-2014: 169
2014-2015: 219
Attending 3 consecutive years:
2003-2005: 117
2004-2006: 135
2005-2007: 134
2006-2008: 138
2007-2009: 122
2008-2010: 117
2009-2011: 94
2010-2012: 82
2011-2013: 98
2012-2014: 107
2013-2015: 130
Attending 4 consecutive years:
2003-2006: 96
2004-2007: 100
2005-2008: 113
2006-2009: 103
2007-2010: 88
2008-2011: 79
2009-2012: 63
2010-2013: 67
2011-2014: 77
2012-2015: 93
Attending 5 consecutive years:
2003-2007: 76
2004-2008: 89
2005-2009: 87
2006-2010: 72
2007-2011: 62
2008-2012: 54
2009-2013: 53
2010-2014: 57
2011-2015: 73
Attending 6 consecutive years:
2003-2008: 70
2004-2009: 68
2005-2010: 64
2006-2011: 53
2007-2012: 45
2008-2013: 47
2009-2014: 47
2010-2015: 54
Attending 7 consecutive years:
2003-2009: 56
2004-2010: 52
2005-2011: 49
2006-2012: 38
2007-2013: 40
2008-2014: 42
2009-2015: 44
Attending 8 consecutive years:
2003-2010: 43
2004-2011: 42
2005-2012: 36
2006-2013: 33
2007-2014: 36
2008-2015: 39
Attending 9 consecutive years:
2003-2011: 38
2004-2012: 31
2005-2013: 31
2006-2014: 29
2007-2015: 33
Attending 10 consecutive years:
2003-2012: 28
2004-2013: 29
2005-2014: 28
2006-2015: 27
Attending 11 consecutive years:
2003-2013: 27
2004-2014: 26
2005-2015: 26
Attending 12 consecutive years:
2003-2014: 24
2004-2015: 24
Attending 13 consecutive years:
2003-2015: 22