Year	Number
1960	-847
1961	-41547
1962	-36399
1963	-37435
1964	-45534
1965	-15985
1966	-21743
1967	9625
1968	-2360
1969	-16684
1970	6159
1971	-86991
1972	-56426
1973	-51885
1974	-3597
1975	-4921
1976	-137370
1977	-75777
1978	-81679
1979	-76127
1980	-153529
1981	-86322
1982	-8242
1983	-682765
1984	-354123
1985	-284607
1986	-214280
1987	-186148
1988	-103580
1989	-54273
1990	-529414
1991	-101888
1992	-72380
1993	-345858
1994	-198790
1995	10350
1996	-188064
1997	56467
1998	-17330
1999	-158730
2000	-22651
2001	-38737
2002	-39042
2003	-99836
2004	-41511
2005	-137920
2006	-223100
2007	-225365
2008	-247671
2009	-220606
2010	-264237
2011	-198802
2012	-435876
2013	-377305
2014	-280418
2015	-360393
2016	-167286
2017	-200823
2018	-255888
2019	-328552
2020	-99761
2021	-264802
2022	-186109
2023	-183333