Year	Number
1960	6003369
1961	6227174
1962	6458409
1963	6696196
1964	6935678
1965	7167145
1966	7388727
1967	7604000
1968	7810769
1969	8006876
1970	8192897
1971	8366366
1972	8526496
1973	8671086
1974	8795158
1975	8897278
1976	8974013
1977	9024223
1978	9051406
1979	9061953
1980	9067072
1981	9064781
1982	9044446
1983	9004863
1984	8950659
1985	8886810
1986	8817016
1987	8741983
1988	8663491
1989	8589986
1990	8492532
1991	8389118
1992	8306195
1993	8234564
1994	8183826
1995	8146980
1996	8110759
1997	8057430
1998	7987114
1999	7900096
2000	7786662
2001	7660793
2002	7546725
2003	7442328
2004	7340381
2005	7232536
2006	7122653
2007	7027307
2008	6947497
2009	6872818
2010	6777170
2011	6661004
2012	6550563
2013	6454439
2014	6373141
2015	6295731
2016	6217336
2017	6141821
2018	6068013
2019	5991330
2020	5910604
2021	5823778
2022	5728446
2023	5628139