Year	Number
1960	580464
1961	605922
1962	634209
1963	663817
1964	694851
1965	727244
1966	761196
1967	796732
1968	833980
1969	872860
1970	913609
1971	952737
1972	992500
1973	1033807
1974	1076894
1975	1121776
1976	1168595
1977	1217230
1978	1267962
1979	1320807
1980	1375932
1981	1433197
1982	1465412
1983	1491866
1984	1518835
1985	1546216
1986	1574129
1987	1602546
1988	1631516
1989	1660929
1990	1690913
1991	1721438
1992	1752557
1993	1784151
1994	1816360
1995	1864088
1996	1927604
1997	1993101
1998	2060918.9999999998
1999	2131044
2000	2203657
2001	2278534
2002	2356063
2003	2436231
2004	2519242
2005	2604762
2006	2693284
2007	2784815
2008	2879589
2009	2977315
2010	3078498
2011	2346492
2012	2293491
2013	2241828
2014	2191260
2015	2222661
2016	2254557
2017	2286820
2018	2319545
2019	2353637
2020	2392045
2021	2439814
2022	2502761
2023	2584771