Year	Number
1960	16628809
1961	17086013
1962	17548591
1963	18053403
1964	18554801
1965	19044946
1966	19520339
1967	19983799
1968	20439724
1969	20904008
1970	21386807
1971	21906796
1972	22432997
1973	22956827
1974	23489125
1975	24045794
1976	24649701
1977	25280657
1978	25926712
1979	26536144
1980	27153723
1981	27823250
1982	28513054
1983	29217704
1984	29929729
1985	30644658
1986	31363658
1987	32083720
1988	32800407
1989	33523705
1990	34252096
1991	34980963
1992	35702394
1993	36404639
1994	37077094
1995	37713859
1996	38312278
1997	38871168
1998	39406200
1999	39911077
2000	40349076
2001	40739120
2002	41131420
2003	41527860
2004	41924749
2005	42317983
2006	42699789
2007	43082251
2008	43478136
2009	43906522
2010	44362702
2011	44823899
2012	45291192
2013	45764918
2014	46239694
2015	46709887
2016	47171586
2017	47620370
2018	48058062
2019	48488283
2020	48922527
2021	49331842
2022	49685569
2023	50008702