Year	Number
1960	5961719
1961	6121624
1962	6288658
1963	6456198
1964	6621567
1965	6789365
1966	6956765
1967	7125049
1968	7297294
1969	7470027
1970	7643281
1971	7811087
1972	7975720
1973	8151558
1974	8340297
1975	8528559
1976	8721204
1977	8865262
1978	8995920
1979	9109518
1980	9139200
1981	9348872
1982	9702484
1983	9989695
1984	10290211
1985	10602762
1986	10912907
1987	11250871
1988	11625820
1989	12006928
1990	12391197
1991	12860263
1992	13335079
1993	13748219
1994	14173735
1995	14618146
1996	15065403
1997	15493801
1998	15915855
1999	16362473
2000	16829316
2001	17321986
2002	17861153
2003	18433017
2004	19024459
2005	19636297
2006	20285084
2007	20975052
2008	21695553
2009	22454521
2010	23267925
2011	24136229
2012	25045503
2013	25976558
2014	26934631
2015	27916026
2016	28930904
2017	29978378
2018	31021596
2019	32064929
2020	33133624
2021	34220347
2022	35314489
2023	36417404