2007      One time check based on formula — $24 per year of service for anyone receiving a benefit check on December 1, 2007.

2006      Cost-of-living increase on October 1, 2006 of 7 % of gross benefit for those retiring prior to 10/1/05.

2005      Cost-of-living increase on October 1, 2005 of 4 % of gross benefit for those retiring prior to 10/1/04.

2002      Cost-of-living increase on October 1, 2002 of 3% of gross benefit.

2000      Cost-of-living increase on October 1, 2000 of 4% of gross benefit.

1998      Cost-of-living increase on October 1, 1998 of 4% of gross benefit plus $2.00 per month for years of service.

1996      Cost-of-living increase on October 1, 1996 of 2% of gross benefit plus $1.00 per month for years of service.

1994      Cost-of-living increase on October 1, 1994 of 2.5% of gross benefit, $1.50 per month for years of service and $1.00 per month for years of retirement.

1993      Cost-of-living increase on October 1, 1993 of 1.28% of gross benefit, $1.28 per month for years of service and $1.28 per month for years of retirement.

1990      Cost-of-living increase of $1 per month on October 1, 1990 for each year of service and $3 per month for each year of retirement

1988      Cost-of-living raise of $1 per month on October 1, 1988 for each year of service. On October 1, 1989, the cost-of-living allowance increased to $2 per month

1985      Cost-of-living raise of $2 per month for each year of creditable service. 1982 Cost-of-living-increase of $1 per month for each year of service.

1980      Cost-of-living increases from $30-60 per month.

1978      Cost-of-living increases from $30-$60 per month.

1975      15% increase in retirement formula with 15% increase guaranteed to all retirees Retirement after 30 years with no penalty.

1973      Minimum benefit increased 66-2/3% for pre October, 1971 retirees 1971 40% increase in retirement formula

1969      10% benefit increase to all not already drawing $400 per month