Year	Number
1960	-168043
1961	-92889
1962	-126089
1963	-126064
1964	-81372
1965	-60693
1966	-121331
1967	-63558
1968	-93621
1969	-254678
1970	-448188
1971	-560198
1972	-598442
1973	-510980
1974	-442039
1975	-694254
1976	-961426
1977	-1168990
1978	-248900
1979	-964327
1980	-2878427
1981	-2205993
1982	-625839
1983	-323220
1984	-102596
1985	-600902
1986	-899316
1987	-995668
1988	-1164167
1989	-922832
1990	-1705165
1991	-969562
1992	1127474
1993	686872
1994	-119197
1995	-683409
1996	-1145503
1997	-1357548
1998	-1040125
1999	-1082863
2000	-2269068
2001	-1313430
2002	16639
2003	-1046503
2004	-1615149
2005	-1250916
2006	-1993656
2007	-2645064
2008	-2158497
2009	-1934142
2010	-1588706
2011	-1131412
2012	-1250886
2013	-969384
2014	-1134842
2015	-1332653
2016	-475522
2017	-891749
2018	-1047798
2019	-926524
2020	96382
2021	-522065
2022	-1007079
2023	-1001888