Over 30 years of retirement, Koch would collect as much as $310,401, according to a projection by Local Government Information Services (LGIS), which publishes Sangamon Sun.
The projection assumes Koch received $6,524 in the first year of retirement, then 3 percent annual increases thereafter, compounded.
After 3 years of retirement, Koch will have already received $20,166 in retirement benefits, or more than the sum total of the retiree's contributions to the state pension fund.