Acts 1985, 69th Leg., ch. 480, Sec. 1, eff. Sept. 1, 1985. Amended by Acts 1987, 70th Leg., ch. 148, Sec. 2.64(a), eff. Sept. 1, 1987; Acts 1987, 70th Leg., ch. 1045, Sec. 1, eff. Sept. 1, 1987; Acts 1987, 70th Leg., ch. 1045, Sec. 2, eff. Jan. 1, 1989; Acts 1989, 71st Leg., ch. 216, Sec. 3, eff. Sept. 1, 1989; Acts 1989, 71st Leg., ch. 373, Sec. 1, eff. Sept. 1, 1989; Acts 1989, 71st Leg., ch. 811, Sec. 1, eff. Sept. 1, 1989; Acts 1989, 71st Leg., ch. 1099, Sec. 4, eff. Jan. 1, 1991; Acts 1991, 72nd Leg., 1st C.S., ch. 8, Sec. 1, eff. Sept. 1, 1991; Acts 1991, 72nd Leg., 1st C.S., ch. 8. Sec. 2, eff. Jan. 1, 1993; Acts 1991, 72nd Leg., 1st C.S., ch. 8, Sec. 3, eff. Sept. 1, 1993; Acts 1993, 73rd Leg., ch. 42, Sec. 1, eff. Sept. 1, 1993; Acts 1993, 73rd Leg., ch. 565, Sec. 4, eff. Sept. 1, 1993; Acts 1993, 73rd Leg., ch. 762, Sec. 1, eff. Sept. 1, 1993; Acts 1993, 73rd Leg., ch. 819, Sec. 2, eff. Sept. 1, 1993; Acts 1995, 74th Leg., ch. 100, Sec. 1, eff. Sept. 1, 1995; Acts 1995, 74th Leg., ch. 202, Sec. 1, eff. Sept. 1, 1995; Acts 1995, 74th Leg., ch. 457, Sec. 4, eff. Sept. 1, 1995; Acts 1995, 74th Leg., ch. 704, Sec. 27, eff. Jan. 1, 1995; Acts 1997, 75th Leg., ch. 378, Sec. 1, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 412, Sec. 3, eff. Sept 1, 1997; Acts 1997, 75th Leg., ch. 720, Sec. 1, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 727, Sec. 1, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 739, Sec. 4, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 853, Sec. 1, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 1081, Sec. 1, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 1290, Sec. 1, eff. June 20, 1997; Acts 1997, 75th Leg., ch. 1352, Sec. 1, eff. Sept. 1, 1997; Acts 1997, 75th Leg., ch. 1448, Sec. 3, eff. Sept. 1, 1997; Acts 1999, 76th Leg., ch. 674, Sec. 1, eff. Sept. 1, 1999; Acts 1999, 76th Leg., ch. 989, Sec. 1, eff. Sept. 1, 1999; Acts 1999, 76th Leg., ch. 1463, Sec. 1, eff. Sept. 1, 1999; Acts 1999, 76th Leg., ch. 1570, Sec. 1, eff. Sept. 1, 1999; Acts 2001, 77th Leg., ch. 174, Sec. 2, eff. Sept. 1, 2001; Acts 2001, 77th Leg., ch. 482, Sec. 1, eff. Sept. 1, 2001; Acts 2001, 77th Leg., ch. 989, Sec. 1, eff. Sept. 1, 2001; Acts 2003, 78th Leg., ch. 716, Sec. 3, eff. Jan. 1, 2004; Acts 2003, 78th Leg., ch. 792, Sec. 1, eff. Jan. 1, 2005; Acts 2003, 78th Leg., ch. 1256, Sec. 1, eff. Jan. 1, 2005. Amended by: Acts 2005, 79th Leg., Ch. 80 , Sec. 1, eff. September 1, 2005. Acts 2005, 79th Leg., Ch. 734 , Sec. 3, eff. January 1, 2009. Acts 2007, 80th Leg., R.S., Ch. 77 , Sec. 1, eff. September 1, 2007. Acts 2007, 80th Leg., R.S., Ch. 77 , Sec. 2, eff. January 1, 2009. Acts 2007, 80th Leg., R.S., Ch. 150 , Sec. 2, eff. September 1, 2007. Acts 2007, 80th Leg., R.S., Ch. 150 , Sec. 3, eff. January 1, 2009. Acts 2007, 80th Leg., R.S., Ch. 277 , Sec. 3, eff. January 1, 2009. Acts 2007, 80th Leg., R.S., Ch. 318 , Sec. 1, eff. September 1, 2007. Acts 2007, 80th Leg., R.S., Ch. 318 , Sec. 2, eff. January 1, 2009. Acts 2007, 80th Leg., R.S., Ch. 554 , Sec. 1, eff. September 1, 2007. Acts 2007, 80th Leg., R.S., Ch. 554 , Sec. 2, eff. January 1, 2009. Acts 2007, 80th Leg., R.S., Ch. 1342 , Sec. 16, eff. September 1, 2007. Acts 2007, 80th Leg., R.S., Ch. 1342 , Sec. 17, eff. September 1, 2008. Acts 2007, 80th Leg., R.S., Ch. 1342 , Sec. 18, eff. January 1, 2009. Acts 2009, 81st Leg., R.S., Ch. 787 , Sec. 3, eff. September 1, 2009. Acts 2009, 81st Leg., R.S., Ch. 1103 , Sec. 16(c), eff. September 1, 2009.