Year	Number
1960	3632938
1961	3632940
1962	3632940
1963	3632940
1964	3632940
1965	7399000
1966	7399000
1967	7399000
1968	7399000
1969	7399000
1970	16403000
1971	16403000
1972	16403000
1973	16403000
1974	16403000
1975	32377000
1976	34444000
1977	35837000
1978	37214000
1979	38611000
1980	39934000
1981	40275768
1982	41500868
1983	42879293
1984	43958545
1985	45299761
1986	46771989
1987	48419274
1988	50339604
1989	52453639
1990	54527953
1991	56259918
1992	57652436
1993	58830075
1994	60690000
1995	62292000
1996	64037000
1997	65735000
1998	62413286
1999	62053583
2000	61957097
2001	61325782
2002	60772460
2003	60219000
2004	59608000
2005	58053000
2006	56029000
2007	51235000
2008	48426826
2009	66794250
2010	65618748
2011	64668524
2012	64225254
2013	64019263
2014	63557374
2015	63705579
2016	64130388
2017	63954472
2018	63442828
2019	62743196
2020	61978594
2021	61583600
2022	60720856