Year	Number
1984	333568
1985	339598
1986	363924
1988	393436
1989	403289
1990	493668
1992	442263
1993	422018
1994	425142
1995	416016
1996	406352
1997	385559
2003	191158
2004	157142
2005	213657
2006	176619
2008	139539
2009	83737
2010	75552
2011	79068
2012	70197
2014	59913