Year	Number
1985	5978800
1989	6340000
1990	5793000
1991	5527000
1992	5306000
1993	5159000
1994	4882000
1995	6777900
1996	6817800
1997	6243950
1998	6458150
1999	6438850
2000	6549600
2001	6312200
2002	6363400
2003	6410800
2004	5857250
2005	6361000
2006	6240000
2007	5520000
2008	5522000
2009	5599442
2010	5626442
2011	5775930
2012	5801730
2013	5802030
2014	5802030
2015	5652030
2016	5505730
2017	5498000
2018	5497640
2019	5340000
2020	5292000