Year	Number
1960	-85134
1961	-314303
1962	-360890
1963	-328860
1964	-270963
1965	-293860
1966	-181729
1967	-244069
1968	-88409
1969	-77903
1970	-77143
1971	17215
1972	-159367
1973	-252245
1974	-321056
1975	-274634
1976	-310612
1977	-105307
1978	-260449
1979	-459381
1980	-327224
1981	-24728
1982	-65320
1983	111241
1984	38800
1985	118477
1986	242687
1987	175281
1988	4701
1989	-305354
1990	78472
1991	-928972
1992	-849505
1993	-787093
1994	-567071
1995	-667831
1996	-246490
1997	-216329
1998	-85117
1999	-299757
2000	-512945
2001	-467909
2002	-437152
2003	-552288
2004	-461359
2005	-521185
2006	-321151
2007	-200845
2008	-214278
2009	-72566
2010	19252
2011	465510
2012	526680
2013	448601
2014	325445
2015	522034
2016	539479
2017	414719
2018	205151
2019	232677
2020	180870
2021	9227
2022	-180381
2023	-178933