Year	Number
1960	150943
1961	150943
1962	150943
1963	150943
1964	150943
1966	230848
1967	230848
1968	230848
1969	230848
1971	311285
1972	311285
1973	311285
1974	311285
1981	1427986.1
1982	1506138
1983	1664962
1984	1822551
1985	1951785
1986	2134766
1987	2328796
1988	2524174
1989	2878960
1990	3058893
1991	3438256
1992	3706324
1993	4063461
1994	4442109
1995	4842353
1996	5145407
1997	5401535
1998	5621334
1999	5966694
2000	6321336
2001	6625706
2002	7212635
2003	7830070
2004	8444830
2005	9411495
2006	9979620
2007	9662458
2008	9289166
2009	11464500
2010	10846303
2011	10235339
2012	10037515
2013	10502359
2014	9722401
2015	8490675
2016	8574493
2017	8220468
2018	8040114
2019	10158960
2020	10156364
2021	10266618
2022	9973270