Year	Number
1960	777450
1961	797161
1962	818101
1963	833097
1964	848733
1965	860003
1966	871790
1967	883772
1968	888169
1969	891452
1970	896768
1971	902684
1972	910361
1973	917314
1974	922966
1975	926639
1976	919666
1977	904475
1978	885162
1979	862996
1980	846683
1981	833777
1982	825569
1983	819688
1984	810317
1985	800228
1986	786012
1987	779476
1988	771059
1989	768599
1990	774550
1991	810193
1992	815011
1993	824472
1994	835558
1995	847416
1996	859887
1997	869996
1998	876028
1999	877817
2000	878588
2001	877178
2002	883619
2003	890803
2004	892940
2005	890699
2006	890536
2007	892132
2008	895830
2009	901495
2010	908006
2011	910456
2012	909374
2013	907976
2014	913508
2015	923270
2016	936462
2017	950019
2018	959157
2019	961333
2020	970608
2021	965557
2022	957136
2023	967024