Year	Number
1992	6967000
1993	6408000
1994	6422000
1995	7695500
1996	7475750
1997	7516170
1998	7323890
1999	6962430
2000	6585200
2001	6287200
2002	6147500
2003	5983200
2004	5707612
2005	5885362
2006	5446492
2007	5419492
2008	5416592
2009	5282679
2010	5242719
2011	5014014
2012	5032780
2013	4797650
2014	4906450
2015	5042650
2016	5034020
2017	4990000
2018	4990505
2019	4993000
2020	5005000