Era
2001-2009
23
2009-
15
1971-1981
14
1981-1993
13
1993-2001
11
1981-2001
10
2001-
7
2001-2009-
7
2012
7
1914-1918
6
1946-
6
2005
6
2006
6
Appropriations and expenditures, 2012
6
Appropriations and expenditures, 2015
6
Appropriations and expenditures, 2017
6
Since 2009
6
1993-
5
2013
5
Appropriations and expenditures, 2005
5
World War, 1914-1918
5
1971-
4
1981 - 1993
4
1981 - 2001
4
1981-
4
2003
4
2008-2009
4
2009
4
2011
4
2015
4
Appropriations and expenditures, 2006
4
Appropriations and expenditures, 2011
4
Appropriations and expenditures, 2013
4
1993 - 2001
3
Appropriations and expenditures, 2007
3
Appropriations and expenditures, 2009
3
Since 1971
3
Since 1993
3
1913-1994
2
1939-
2
2000
2
2000-
2
2001
2
2001 - 2009
2
2004
2
2007
2
2008 - 2009
2
2018
2
Appropriations and expenditures, 2003
2
Appropriations and expenditures, 2004
2
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