| Date - Field | United States - Government type |
2012 January Government type | Constitution-based federal republic; strong democratic tradition |
2011 January Government type | Constitution-based federal republic; strong democratic tradition |
2010 January Government type | Constitution-based federal republic; strong democratic tradition |
2009 January Government type | Constitution-based federal republic; strong democratic tradition |
2008 January Government type | Constitution-based federal republic; strong democratic tradition |
2007 January Government type | Constitution-based federal republic; strong democratic tradition |
2006 January Government type | Constitution-based federal republic; strong democratic tradition |
2005 January Government type | Constitution-based federal republic; strong democratic tradition |
2004 January Government type | Constitution-based federal republic; strong democratic tradition |
2003 January Government type | Constitution-based federal republic; strong democratic tradition |
2002 January Government type | federal republic; strong democratic tradition |
2001 January Government type | federal republic; strong democratic tradition |
2000 January Government type | federal republic; strong democratic tradition |