Year	Number
1973	257100
1974	296200
1975	300000
1976	313000
1977	305000
1978	280000
1979	310000
1980	322000
1981	319300
1982	330000
1983	309300
1984	324800
1985	320200
1986	313400
1987	309700
1988	382000
1989	458800
1990	433400
1991	413700
1992	426000
1993	424200
1994	464600
1995	494500
1996	479600
1997	516900
1998	516200
1999	549800
2000	586043
2001	612727
2002	715000
2003	972000
2004	836719
2005	870571
2006	932394
2007	960546
2008	946138
2009	1146591
2010	1259009
2011	1276205.48
2012	1225268.56188571
2013	1161936
2014	1243824
2015	1336976
2016	1402765
2017	1557876
2018	1670216
2019	1700293
2020	409104
2021	133708