Year	Number
1960	448560
1961	459690
1962	471578
1963	484747
1964	499473
1965	515953
1966	533753
1967	552263
1968	571490
1969	591399
1970	611859
1971	632735
1972	652644
1973	672864
1974	694735
1975	717027
1976	739791
1977	762992
1978	786412
1979	809784
1980	833629
1981	858058
1982	882692
1983	907773
1984	933271
1985	959319
1986	986301
1987	1014382
1988	1043933
1989	1075190
1990	1107952
1991	1142075
1992	1177341
1993	1213643
1994	1250951
1995	1288999
1996	1326464
1997	1363118
1998	1399262
1999	1434948
2000	1470392
2001	1505116
2002	1539336
2003	1573572
2004	1608087
2005	1644436
2006	1683118
2007	1722829
2008	1763288
2009	1804137
2010	1845093
2011	1886057
2012	1926390
2013	1965507
2014	2003445
2015	2040228
2016	2076283
2017	2112160
2018	2147861
2019	2183307
2020	2219842
2021	2257886
2022	2296781
2023	2336159