Year	Number
1960	6911510
1961	7109029
1962	7281192
1963	7458243
1964	7640196
1965	7827726
1966	8019658
1967	8216086
1968	8418152
1969	8629855
1970	8861895
1971	9108878
1972	9365952
1973	9637197
1974	9918979
1975	10209848
1976	10509006
1977	10825496
1978	11163230
1979	11515675
1980	11865246
1981	12212960
1982	12584976
1983	12984131
1984	13342487
1985	13651443
1986	13971682
1987	14310790
1988	14671677
1989	15052447
1990	15446982
1991	15843471
1992	16241548
1993	16643633
1994	17040854
1995	17438874
1996	17844010
1997	18268040
1998	18714708
1999	19176791
2000	19665502
2001	20195577
2002	20758326
2003	21329514
2004	21906444
2005	22496951
2006	23098586
2007	23708320
2008	24326087
2009	24950762
2010	25574719
2011	26205941
2012	26858762
2013	27525597
2014	28196358
2015	28870939
2016	29554303
2017	30222262
2018	30870641
2019	31522290
2020	32180401
2021	32833031
2022	33475870
2023	34121985