Year	Number
1997	363000
1998	305000
1999	356000
2000	547000
2001	612000
2002	721000
2003	630000
2004	617000
2005	729000
2006	774000
2007	831000
2008	916000
2009	1155000
2010	1118000
2011	1092000
2012	1058000
2013	1103000