Source. 1951, 20:2. RSA 260:15. 1965, 240:7. 1969, 291:2. 1977, 563:78. 1978, 51:2. 1981, 146:1; 568:28. 1986, 218:4. 1999, 302:2. 2003, 319:45. 2009, 144:49, eff. July 1, 2009.