Year	Number
1960	191849
1961	208607
1962	226856
1963	246700
1964	276555
1965	309925
1966	347377
1967	389354
1968	436472
1969	489139
1970	548246
1971	614497
1972	688861
1973	771982
1974	865269
1975	966025
1976	1058136
1977	1158740
1978	1269067
1979	1325017
1980	1383516
1981	1444425
1982	1508106
1983	1574595
1984	1644112
1985	1716495
1986	1792171
1987	1871183
1988	1950508
1989	2024809
1990	2102049
1991	2182236
1992	2265598
1993	2351902
1994	2441619
1995	2534759
1996	2631588
1997	2731834
1998	2836045
1999	2926232
2000	3007498
2001	3090788
2002	3176505
2003	3264599
2004	3355262
2005	3448183
2006	3543811
2007	3642091
2008	3743238
2009	3846904
2010	3953590
2011	4063235
2012	4176077
2013	4291730
2014	4410752
2015	4533075
2016	4658790
2017	4787992
2018	4920776
2019	5058550
2020	5202762
2021	5354826
2022	5515790
2023	5686350