Year	Number
1960	17909356
1961	18271000
1962	18614000
1963	18964000
1964	19325000
1965	19678000
1966	20048000
1967	20412000
1968	20744000
1969	21028000
1970	21324000
1971	21962032
1972	22218463
1973	22491777
1974	22807969
1975	23143275
1976	23449808
1977	23725843
1978	23963203
1979	24201544
1980	24515667
1981	24819915
1982	25116942
1983	25366451
1984	25607053
1985	25842116
1986	26100278
1987	26446601
1988	26791747
1989	27276781
1990	27691138
1991	28037420
1992	28371264
1993	28684764
1994	29000663
1995	29302311
1996	29610218
1997	29905948
1998	30155173
1999	30401286
2000	30685730
2001	31020855
2002	31359199
2003	31642461
2004	31938807
2005	32242732
2006	32571193
2007	32888886
2008	33247298
2009	33630069
2010	34005902
2011	34339221
2012	34713395
2013	35080992
2014	35434066
2015	35704498
2016	36110803
2017	36545075
2018	37072620
2019	37618495
2020	38028638
2021	38239864
2022	38939056
2023	40097761