Source. RSA 269-A:20. 1967, 357:1. 1971, 257:1. 1977, 451:1. 1981, 146:1; 479:15, 18. 1983, 351:1. 1989, 305:22, eff. July 1, 1989. 2001, 119:1, 2, eff. Aug. 25, 2001. 2004, 96:1, eff. Jan. 1, 2005. 2005, 182:1, eff. Aug. 29, 2005. 2009, 18:1, 2, eff. Aug. 2, 2009.