Year	Number
1960	165351
1961	171021
1962	176630
1963	181894
1964	186565
1965	191962
1966	198580
1967	205048
1968	211153
1969	217136
1970	222980
1971	228816
1972	234722
1973	240736
1974	247063
1975	253827
1976	260876
1977	269056
1978	278177
1979	287356
1980	296783
1981	306443
1982	316296
1983	326301
1984	336468
1985	345960
1986	352956
1987	359510
1988	367207
1989	374319
1990	380503
1991	385765
1992	390174
1993	393655
1994	396180
1995	397937
1996	399163
1997	398939
1998	396959
1999	393964
2000	390231
2001	386228
2002	382065
2003	377747
2004	373221
2005	368901
2006	366135
2007	364404
2008	363831
2009	364519
2010	364969
2011	365444
2012	366308
2013	367805
2014	370008
2015	372649
2016	375568
2017	378325
2018	380718
2019	383127
2020	385957
2021	388942
2022	391486
2023	393705