| Year | Rep/Lean Rep | Dem/Lean Dem |
|---|---|---|
| 1992 | ||
| 1994 | 61 | 31 |
| 1995 | 62 | 33 |
| 1996 | 62 | 32 |
| 1997 | 57 | 36 |
| 1998 | 58 | 33 |
| 1999 | 57 | 35 |
| 2000 | 58 | 33 |
| 2001 | 61 | 32 |
| 2002 | 63 | 29 |
| 2003 | 65 | 28 |
| 2004 | 66 | 28 |
| 2005 | 65 | 28 |
| 2006 | 63 | 30 |
| 2007 | 62 | 30 |
| 2008 | 64 | 28 |
| 2009 | 63 | 28 |
| 2010 | 69 | 24 |
| 2011 | 70 | 24 |
| 2012 | 71 | 22 |
| 2013 | 71 | 22 |
| 2014 | 72 | 20 |
| 2015 | 75 | 19 |
| 2016 | 76 | 19 |
| 2017 | 77 | 18 |
- Report
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