Year	kt
1960	51.338
1961	69.673
1962	95.342
1963	106.343
1964	128.345
1965	132.012
1966	150.347
1967	165.015
1968	168.682
1969	168.682
1970	205.352
1971	227.354
1972	231.021
1973	223.687
1974	267.691
1975	297.027
1976	253.023
1977	308.028
1978	414.371
1979	414.371
1980	528.048
1981	535.382
1982	484.044
1983	682.062
1984	605.055
1985	733.4
1986	876.413
1987	971.755
1988	964.421
1989	1030.427
1990	1034.094
1991	1092.766
1992	1081.765
1993	1180.774
1994	1272.449
1995	1232.112
1996	1408.128
1997	1488.802
1998	1558.475
1999	1518.138
2000	1631.815
2001	1686.82
2002	1518.138
2003	1532.806
2004	1716.156
2005	1829.833
2006	1620.814
2007	1536.473
2008	1338.455
2009	2071.855
2010	1408.128
2011	1448.465
2012	1312.786
2013	1180.774
2014	1283.45