Year	Number
1970	70262
1972	124201
1973	73416
1975	85940
1976	79202
1977	72779
1978	63168
1979	56021
1980	45876
1981	39098
1983	38456
1984	38288
1985	35266
1986	37884
1987	31341
1988	21192
1989	11168
1990	3034
1991	2344
1992	60793
1993	2690
1994	31244
1995	38550
1996	17242
1999	5073
2000	6453
2001	5937
2002	5475
2003	5937
2004	5563
2005	6140
2006	5363
2007	5651
2008	15823
2009	24982
2010	24703
2011	26879
2012	29832
2016	92549
2020	92752
2021	92806
2022	91610