Year	Number
1960	4176021
1961	4344260
1962	4519511
1963	4702253
1964	4893076
1965	5093201
1966	5302503
1967	5520741
1968	5748717
1969	5984786
1970	6228963
1971	6480456
1972	6739973
1973	6971395
1974	7114580
1975	7258958
1976	7405199
1977	7554802
1978	7709095
1979	7864755
1980	8022752
1981	8180284
1982	8335789
1983	8516701
1984	8755020
1985	8991961
1986	9224761
1987	9452769
1988	9676644
1989	9899602
1990	10122330
1991	10340178
1992	10553993
1993	10768428
1994	10984786
1995	11202020
1996	11421649
1997	11644677
1998	11869350
1999	12090526
2000	12306734
2001	12519714
2002	12731400
2003	12939374
2004	13141153
2005	13337081
2006	13528193
2007	13719323
2008	13891315
2009	14065094
2010	14266587
2011	14477757
2012	14696854
2013	14919480
2014	15142977
2015	15372077
2016	15610256
2017	15854871
2018	16104740
2019	16363966
2020	16636518
2021	16918421
2022	17213307
2023	17526086