Section 234.17 - Repayment to general fund(1) The authority shall repay the amounts appropriated under s. 20.143(1) (a), 1971 stats., to the general fund from that portion of the authority's surplus, if any, as is determined by agreement between the authority and the secretary of administration.(2) By July 31, 2005, July 31, 2006, and July 31, 2007, the authority shall pay into the state treasury an amount equal to the cost to the state of the tax exemption under ss. 71.05(1) (c) 1m, 71.26(1m) (em), and 71.45(1t) (em) in the previous taxable year, as determined jointly by the secretary of administration and the authority.1971 c. 287; 1975 c. 39; 1977 c. 418; 2003 a. 85.