Year	Number
1985	6328500
1989	6838000
1990	6725000
1991	6582000
1992	6829000
1993	6528000
1994	6346000
1995	6737300
1996	6687620
1997	6413720
1998	6404740
1999	6262740
2000	5889500
2001	5825400
2002	5865600
2003	5776400
2004	5504892
2005	5748892
2006	5367892
2007	5370892
2008	5364212
2009	5225599
2010	5253651
2011	5078206
2012	5019630
2013	4835880
2014	4829030
2015	4829110
2016	4842020
2017	4755000
2018	4722865
2019	4748000
2020	4708000