Year	Number
1960	-91696
1961	-42895
1962	-60658
1963	-53701
1964	-8082
1965	-4944
1966	-33803
1967	14154
1968	15632
1969	-24417
1970	7343
1971	-181504
1972	-185769
1973	-21796
1974	139276
1975	62292
1976	-122997
1977	-444934
1978	467429
1979	51338
1980	-462371
1981	226520
1982	158733
1983	-601386
1984	-204099
1985	-127813
1986	13963
1987	29592
1988	-315057
1989	-193279
1990	-506599
1991	-613048
1992	-629043
1993	-502855
1994	-590735
1995	-233595
1996	-615202
1997	-757011
1998	-450326
1999	-557894
2000	-587161
2001	-448465
2002	-491343
2003	-442393
2004	-373224
2005	-495797
2006	-507478
2007	-440265
2008	-606739
2009	-694094
2010	-635793
2011	-882413
2012	-721107
2013	-470147
2014	-480026
2015	34532
2016	-1031994
2017	-543898
2018	-621993
2019	-515962
2020	-148716
2021	-444246
2022	-460391
2023	-455082