Got to thinking about the general nature of public corruption and found that the Department of Justice's Public Integrity Section handles federal, state, and local corruption charges and
reports to congress every year.
That link includes information on the departments porfolio in 2007. It really confirms just how boring and petty most of it is.
In 2007 838 federal, state, and local officials were charged with crimes with 739 convictions. Convictions (federal, state, local, and private citizens mixed up in one of them) by year below.
No breakdown by party affiliation. Though there was a law professor a couple years back who showed that the Bush DoJ was 7 times more likely to be investigating Democrat officials than Republican. They're study, though, did not include any information from before 2002 to show if that was a massive change from before (and of course we've all heard the accusations of a politicized DoJ).
1988 - 1067
1989 - 1149
1990 - 1084
1991 - 1194
1992 - 1081
1993 - 1362
1994 - 969
1995 - 878
1996 - 902
1997 - 853
1998 - 1014
1999 - 1065
2000 - 938
2001 - 920
2002 - 1011
2003 - 868
2004 - 1020
2005 - 1027
2006 - 1030
2007 - 1014