Table 1.

Primary THAs and TKAs in the Australian population and annual crude incidence rate per 100,000 citizens 40 years or older, 1994-2014

Year	Total population (number)	Population ≥ 40 years (number)	Proportion ≥40 years (%)	THAs (number)	IR THA ≥ 40 years (95% CI)	TKAs (number)	IR TKA ≥40 years (95% CI)
1994-1995	17,843,268	7,051,514	40	11,421	162 (137-187)	12,030	171 (146-197)
1995-1996	18,071,758	7,221,273	40	12,012	166 (142-193)	13,090	181 (156-209)
1996-1997	18,310,714	7,404,891	40	12,549	169 (145-196)	13,792	186 (161-214)
1997-1998	18,524,155	7,583,660	41	13,545	179 (153-206)	15,599	206 (178-235)
1998-1999	18,730,359	7,768,874	41	13,848	178 (153-206)	17,097	220 (192-251)
1999-2000	18,966,788	7,950,750	42	14,193	179 (153-206)	15,597	196 (170-225)
2000-2001	19,225,331	8,215,397	43	15,373	187 (162-215)	17,097	208 (181-238)
2001-2002	19,485,278	8,433,216	43	17,378	206 (179-236)	20,296	241 (211-272)
2002-2003	19,662,781	8,606,134	44	18,534	215 (188-245)	21,540	250 (220-282)
2003-2004	19,872,646	8,819,746	44	19,380	220 (191-249)	23,132	262 (232-295)
2004-2005	20,127,363	8,985,606	45	20,683	230 (202-261)	25,428	283 (250-316)
2005-2006	20,394,791	9,166,943	45	21,050	230 (201-260)	27,049	295 (263-330)
2006-2007	20,697,880	9,341,782	45	21,971	235 (206-266)	28,835	309 (275-344)
2007-2008	21,015,042	9,527,661	45	23,268	244 (215-276)	31,464	330 (296-367)
2008-2009	21,373,998	9,714,982	45	23,999	247 (218-279)	33,189	342 (306-379)
2009-2010	21,778,845	9.880,790	45	25,736	260 (230-293)	35,702	361 (325-400)
2010-2011	22,065,317	10,070,806	46	26,780	266 (234-298)	39,181	389 (352-429)
2011-2012	22,323,933	10,277,688	46	27,733	270 (238-303)	41,552	404 (366-445)
2012-2013	22,728,254	10,500,056	46	29,069	277 (245-310)	43,392	413 (375-454)
2013-2014	23,125,868	10,713,254	46	31,554	295 (262-329)	46,848	437 (397-479)

IR = incidence rate.