Year	Number
1960	27346219
1961	27904227
1962	28177770
1963	28403741
1964	28775954
1965	29169207
1966	29184034
1967	28987719
1968	28837933
1969	28618949
1970	28438029
1971	28248380
1972	27914789
1973	27474153
1974	27014674
1975	26563808
1976	26092200
1977	25687834
1978	25364051
1979	25126384
1980	24964525
1981	24924724
1982	24954516
1983	24983763
1984	24993909
1985	25003730
1986	25050508
1987	25205078
1988	25480141
1989	25821550
1990	26252910
1991	26764085
1992	27273486
1993	27718277
1994	28062321
1995	28323001
1996	28546741
1997	28796161
1998	29053434
1999	29302337
2000	29497037
2001	29603053
2002	29682175
2003	29735551
2004	29765567
2005	29752532
2006	29767171
2007	29829901
2008	29928534
2009	30007205
2010	30053875
2011	30086993
2012	30146859
2013	30186975
2014	30225827
2015	30245594
2016	30264290
2017	30260729
2018	30183494
2019	30037086
2020	29965884
2021	29580645
2022	29231917
2023	28915018