COLA History
| Year | COLA |
|---|---|
| 2018 | 1.63% |
| 2017 | 0.0% |
| 2016 | 2.0% |
| 2015 | 2.0% |
| 2014 | 2.0% |
| 2013 | 2.0% |
| 2012 | 2.0% |
| 2011 | 0.0% |
| 2010 | 0.0% |
| 2009 | 5.0% |
| 2008 | 2.7% |
| 2007 | 4.3% |
| 2006 | 2.5% |
| 2005 | 3.3% |
| 2004 | 2.1% |
| 2003 | 1.1% |
| 2002 | 3.3% |
| 2001 | 3.7% |
| 2000 | 2.0% |
| 1999 | 1.7% |
| 1998 | 2.3% |
| 1997 | 2.8% |
| 1996 | 3.0% |
| 1995 | 2.5% |
| 1994 | 3.0% |
| 1993 | 3.1% |
| 1992 | 4.0% |
| 1991 | 4.0% |
| 1990 | 4.0% |
| 1989 | 4.0% |
| 1988 | 3.7% |
| 1987 | 1.7% |
| 1986 | 3.7% |
| 1985 | 4.0% |
| 1984 | 2.6% |
| 1983 | 4.0% |
| 1982 | 4.0% |