Year	Number
1999	267276
2000	226372
2001	180265
2002	127111
2003	149658
2004	144274
2005	166549
2006	152083
2007	132125
2008	165314
2009	129042
2010	115160
2011	115209
2012	91939
2013	107455
2014	133079
2015	141799
2016	197073