Year	Number
1982	52356
1983	58128
1984	72522
1985	114503
1986	154996
1987	168466
1988	146642
1989	144492
1990	164527
1991	178170
1992	205683
1993	253603
1994	257061
1995	298250
1996	273223
1997	217072
1998	284355
1999	316543
2000	399144
2001	450306
2002	539593
2003	626267
2004	770362
2005	847006
2006	925337
2007	871913
2008	871491
2009	1013587
2010	1274097
2011	1597492
2012	1830029
2013	2071133
2014	2334182