Year	Number
1960	8596096
1961	8909047
1962	9228928
1963	9551244
1964	9882024
1965	10229723
1966	10588555
1967	10952372
1968	11321821
1969	11696489
1970	12074731
1971	12415411
1972	12723529
1973	13042560
1974	13367822
1975	13697572
1976	14026408
1977	14360295
1978	14694131
1979	15003716
1980	15256882
1981	15433459
1982	15570089
1983	15696291
1984	15806210
1985	15900534
1986	15972070
1987	16017016
1988	16054696
1989	16089934
1990	16135820
1991	16187200
1992	16246950
1993	16334400
1994	16440872
1995	16556446
1996	16664544
1997	16758585
1998	16846904
1999	16926478
2000	16987921
2001	17040890
2002	17089222
2003	17128741
2004	17156209
2005	17164491
2006	17155578
2007	17138191
2008	17116604
2009	17091343
2010	17078708
2011	17085989
2012	17076230
2013	17028168
2014	16950547
2015	16845319
2016	16736779
2017	16626563
2018	16482906
2019	16331694
2020	16197190
2021	16044074
2022	15857378
2023	15656820