Year	Number
1977	410073
1978	416793
1979	424394
1980	427870
1981	427193
1982	422493
1983	416028
1984	408704
1985	396230
1986	382442
1987	368498
1988	354775
1989	343662
1990	338307
1991	337958
1992	343735
1993	369615
1994	380440
1995	380175
1996	378328
1998	366860
1999	368559
2000	369895
2001	373462
2002	375424
2003	380224
2004	387723
2005	395219
2006	402223
2007	401896
2008	402131
2009	397977
2010	396160
2011	397849
2012	396115
2013	386508
2015	383955
2016	381380
2017	382503