Year	Number
1985	7537800
1989	8362000
1990	7793000
1991	7619000
1992	9382000
1993	8801000
1994	8535000
1995	11511800
1996	11152720
1997	10812980
1998	10860110
1999	10592070
2000	10592700
2001	10435600
2002	10281000
2003	10247400
2004	9814930
2005	10288480
2006	10121240
2007	9431590
2008	9421730
2009	9598337
2010	9562730
2011	9531808
2012	9609744
2013	9527790
2014	9576830
2015	9699100
2016	9681800
2017	9684000
2018	9723460
2019	9557000
2020	9498000