Congress
Date
Number Proposed
1st -101st
102nd
103rd
104th
105th
106th
107th
108th
109th
110th
1789-1990
1991-1992
1993-1994
1995-1996
1997-1998
1999-2000
2001-2002
2003-2004
2005-2006
2007-2008
10,431
153
155
152
118
71
77
72
66