Historical Cost of Living Adjustments (COLA) Percentages

Effective Date Tiers 1 & 2 Tiers 3 & 4 Tier 5 Tier 5 Bank DROP
July 1 2010 1.40% 1.40% 1.40% 0.00% 1.40%
July 1 2009 0.00% 0.00% 0.00% 0.00% 0.00%
July 1 2008 3.10% 3.00% 3.00% 0.10% 3.00%
July 1 2007 3.50% 3.00% 3.00% 0.50% 3.00%
July 1 2006 5.10% 3.00% 3.00% 2.10% 3.00%
July 1 2005 3.80% 3.00% 3.00% 0.80% 3.00%
July 1 2004 1.90% 1.90% 1.90% 0.00% 1.90%
July 1 2003 3.60% 3.00% 3.00% 0.60% 3.00%
July 1 2002 2.70% 2.70% 2.70% 0.00% 2.70%
July 1 2001 3.60% 3.00% N/A N/A N/A
July 1 2000 2.90% 2.90% N/A N/A N/A
July 1 1999 2.20% 2.20% N/A N/A N/A
July 1 1998 1.20% 1.20% N/A N/A N/A
July 1 1997 1.90% 1.90% N/A N/A N/A
July 1 1996 1.10% 1.10% N/A N/A N/A
July 1 1995 1.50% 1.50% N/A N/A N/A
July 1 1994 1.50% 1.50% N/A N/A N/A
July 1 1993 3.50% 3.00% N/A N/A N/A
July 1 1992 3.60% 3.00% N/A N/A N/A
July 1 1991 4.70% 3.00% N/A N/A N/A
January 1 1991 N/A 3.35% N/A N/A N/A
July 1 1990 6.50% 3.00% N/A N/A N/A
July 1 1989 4.80% 3.00% N/A N/A N/A
July 1 1988 4.40% 3.00% N/A N/A N/A
January 1 1988 N/A 1.65% N/A N/A N/A
July 1 1987 3.70% 3.00% N/A N/A N/A
July 1 1986 4.00% 3.00% N/A N/A N/A
July 1 1985 4.60% 3.00% N/A N/A N/A
July 1 1984 4.70% 3.00% N/A N/A N/A
July 1 1983 0.50% 0.50% N/A N/A N/A
July 1 1982 9.10% 3.00% N/A N/A N/A
July 1 1981 10.10% N/A N/A N/A N/A
July 1 1980 17.70% N/A N/A N/A N/A
July 1 1979 8.30% N/A N/A N/A N/A
July 1 1978 5.40% N/A N/A N/A N/A
July 1 1977 7.60% N/A N/A N/A N/A
July 1 1976 7.60% N/A N/A N/A N/A
July 1 1975 11.70% N/A N/A N/A N/A
July 1 1974 8.50% N/A N/A N/A N/A
July 1 1973 4.24% N/A N/A N/A N/A
July 1 1972 3.58% N/A N/A N/A N/A
July 1 1971 3.88% N/A N/A N/A N/A
July 1 1970 3.00% N/A N/A N/A N/A
July 1 1969 3.00% N/A N/A N/A N/A
July 1 1968 3.00% N/A N/A N/A N/A
July 1 1967 2.03% N/A N/A N/A N/A

Note: Tier 5 became effective January 1, 2002, and DROP began May 1, 2002.

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