| Year | Initiatives & Candidates Qualified | Signatures Collected | |||
| 2016 | 33 | 4,367,206 | |||
| 2015 | 13 | 3.629,752 | |||
| 2014 | 35 | 2,832,791 | |||
| 2013 | 16 | 2,571,333 | |||
| 2012 | 21 | 5,052,178 | |||
| 2011 | 18 | 1,386,640 | |||
| 2010 | 21 | 2,473,138 | |||
| 2009 | 5 | 1,584,935 | |||
| 2008 | 24 | 4,260,471 | |||
| 2007 | 2 | 1,666,932 | |||
| 2006 | 17 | 2,081,791 | |||
| 2005 | 8 | 1,026,433 | |||
| 2004 | 19 | 5,425,324 | |||
| 2003 | 4 | 684,181 | |||
| 2002 | 23 | 5,165,024 | |||
| 2001 | 27 | 1,573,881 | |||
| 2000 | 19 | 3,433,291 | |||
| 1999 | 14 | 3,219,939 | |||
| 1998 | 28 | 6,523,273 | |||
| 1997 | 13 | 604,800 | |||
| 1996 | 13 | 3,795,703 | |||
| 1995 | 3 | 2,435,090 | |||
| 1994 | 1 | 500,000 | |||
| Totals | 354 | 65,844,483 | |||