Year	Number
1995	34000
1996	27000
1997	11000
1998	15000
1999	26000
2000	29000
2001	36000
2002	74000
2003	74000
2004	133000
2005	148000
2006	214000
2007	192000
2008	202000
2009	212000
2010	142000
2011	144000
2012	147000
2013	234000
2014	235000
2015	131000
2016	187000
2017	299000