Year	Number
1960	1024060
1961	1017275
1962	1007733
1963	996732
1964	985551
1965	976297
1966	969393
1967	963763
1968	962642
1969	966467
1970	969282
1971	969519
1972	968737
1973	970067
1974	976174
1975	980897
1976	983573
1977	987178
1978	985826
1979	982953
1980	982034
1981	979913
1982	977211
1983	970870
1984	960742
1985	949307
1986	939976
1987	934119
1988	926791
1989	903398
1990	872367
1991	847240
1992	819414
1993	793608
1994	770932
1995	746898
1996	723290
1997	698872
1998	673535
1999	650687
2000	630606
2001	601411
2002	571783
2003	551560
2004	533166
2005	517846
2006	506840
2007	500285
2008	496707
2009	496002
2010	497102
2011	497706
2012	498917
2013	500103
2014	497747
2015	492822
2016	488397
2017	484944
2018	481186
2019	476473
2020	472042
2021	467352
2022	439459
2023	436410