Year	Number
1970	79924
1971	90155
1972	90544
1973	90631
1974	74401
1976	73379
1977	70878
1978	88892
1979	88932
1980	92167
1981	95710
1982	89676
1983	96878
1984	100908
1985	100971
1986	105707
1987	100259
1988	99498
1989	103900
1990	109454
1991	106926
1992	108307
1993	118638
1994	118350
1995	125877
1996	127169
1998	153177
1999	162373
2000	84683
2001	77104
2002	68131
2003	60898
2004	63248
2005	59429
2006	52771
2007	59407
2008	54676
2009	55066
2010	50952
2011	47776
2012	45015
2013	41944
2014	44983
2015	45877
2016	43461
2017	37641
2022	89723
2023	96950