Year	kt
1960	2632.906
1961	3516.653
1962	6142.225
1963	6820.62
1964	5680.183
1965	2119.526
1966	4110.707
1967	4466.406
1968	5438.161
1969	8045.398
1970	16402.491
1971	21151.256
1972	17231.233
1973	20568.203
1974	21976.331
1975	25566.324
1976	27858.199
1977	44381.701
1978	50399.248
1979	70622.753
1980	72129.89
1981	81198.381
1982	96181.743
1983	117167.984
1984	109096.917
1985	123464.223
1986	147230.05
1987	131120.919
1988	134883.261
1989	133511.803
1990	88466.375
1991	149646.603
1992	163738.884
1993	185638.208
1994	174644.542
1995	150871.381
1996	169481.406
1997	124105.948
1998	115008.121
1999	135253.628
2000	198531.38
2001	205172.317
2002	219642.299
2003	217016.727
2004	263411.611
2005	256899.019
2006	283998.149
2007	258677.514
2008	289051.275
2009	326333.664
2010	359941.719
2011	335985.208
2012	386534.803
2013	359677.695
2014	413230.563
2015	415504.103
2016	322490.648