Year	Number
1960	-161432
1961	-143868
1962	-195932
1963	-184852
1964	-165355
1965	-154888
1966	-104991
1967	-97641
1968	-149880
1969	-69192
1970	-243934
1971	-98924
1972	-90664
1973	-116848
1974	-39791
1975	74147
1976	112189
1977	132259
1978	126465
1979	11666
1980	5810
1981	13524
1982	102830
1983	219394
1984	188219
1985	220025
1986	288619
1987	261154
1988	238663
1989	68756
1990	257950
1991	124261
1992	443129
1993	731233
1994	658544
1995	544803
1996	463685
1997	463215
1998	464127
1999	518140
2000	404928
2001	287206
2002	289174
2003	241147
2004	239753
2005	244437
2006	282022
2007	372974
2008	385471
2009	374958
2010	253479
2011	295952
2012	304059
2013	291552
2014	260843
2015	384942
2016	373316
2017	350105
2018	336527
2019	333509
2020	340711
2021	320617
2022	942445
2023	-136414