None of the laws of this state regulating insurance or insurance companies shall apply to the system or to the retirement system or any of its funds. [C46, 50, §97.47; C54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §97B.64 ] 2001 Acts, ch 68, §21, 24 ; 2003 Acts, ch 145, §180