Year	Number
1960	-7586
1961	-7893
1962	-6470
1963	-3057
1964	-3172
1965	-3718
1966	-3021
1967	-3764
1968	-3210
1969	-14550
1970	-25655
1971	-42660
1972	-86479
1973	-73514
1974	-51953
1975	-47415
1976	-42295
1977	-37704
1978	-34630
1979	-98976
1980	-106037
1981	-83121
1982	-53573
1983	-45835
1984	-8824
1985	-42995
1986	-19507
1987	-22431
1988	-20124
1989	-12579
1990	-21692
1991	3642
1992	24725
1993	18352
1994	-16192
1995	-242445
1996	-22809
1997	-155544
1998	6283
1999	-39697
2000	-52834
2001	-95975
2002	-35155
2003	-96452
2004	-138801
2005	-151432
2006	-156293
2007	-154826
2008	-158848
2009	-164609
2010	-168379
2011	-173065
2012	-175994
2013	-176638
2014	-92291
2015	-62377
2016	123381
2017	92876
2018	60723
2019	107203
2020	43465
2021	43465
2022	-118846
2023	-126181