Year	kt
1960	172.349
1961	172.349
1962	245.689
1963	201.685
1964	304.361
1965	300.694
1966	267.691
1967	498.712
1968	634.391
1969	572.052
1970	498.712
1971	392.369
1972	689.396
1973	674.728
1974	689.396
1975	590.387
1976	616.056
1977	638.058
1978	627.057
1979	656.393
1980	590.387
1981	539.049
1982	498.712
1983	557.384
1984	561.051
1985	612.389
1986	678.395
1987	832.409
1988	744.401
1989	854.411
1990	1265.115
1991	1349.456
1992	1518.138
1993	1609.813
1994	1532.806
1995	1664.818
1996	1840.834
1997	1877.504
1998	2009.516
1999	2104.858
2000	2097.524
2001	2174.531
2002	2148.862
2003	2310.21
2004	2423.887
2005	2442.222
2006	2493.56
2007	2365.215
2008	2225.869
2009	2299.209
2010	2343.213
2011	2412.886
2012	2379.883
2013	2398.218
2014	2475.225
2015	2526.563
2016	2632.906