Source. RSA 260:21-a. 1969, 335:1. 1977, 195:1. 1981, 146:1. 1983, 431:5. 1987, 151:1. 1989, 305:4. 1990, 154:1. 1991, 294:1. 1995, 85:2. 2003, 17:1, eff. June 21, 2003. 2017, 239:1, eff. Sept. 16, 2017.