Year	kt
1960	10214.87177915093
1961	13822.167528563428
1962	19358.767221123664
1963	20240.29287049778
1964	23441.622860330088
1965	27056.651290877446
1966	29453.782442684253
1967	32844.56312032065
1968	33969.66822544288
1969	34039.19113937784
1970	36453.181206563946
1971	37098.19935251607
1972	40782.530206388685
1973	45513.458189610865
1974	47842.23335196431
1975	49657.36490471077
1976	50302.31590323983
1977	52874.39593330184
1978	61915.29585879009
1979	71906.24336294988
1980	77942.52127133866
1981	83163.9209720051
1982	92097.228609607
1983	96768.49146245843
1984	99355.05849668199
1985	102811.45750762497
1986	99382.09178503574
1987	107150.42001625143
1988	114111.79963895613
1989	157559.6115603628
1990	121467.00107059926
1991	128432.24169143081
1992	130339.57476609312
1993	123123.3692670165
1994	128061.58587125354
1995	138891.6856170587
1996	153335.67960959245
1997	164617.5161362387
1998	171537.39858794265
1999	177515.0649022494
2000	199680.3133803637
2001	199410.00547209397
2002	214585.27601748976
2003	232251.1444004887
2004	259299.9949713592
2005	263205.38219602994
2006	284438.5180634952
2007	286707.0319444923
2008	305752.53473147145
2009	304443.0360565326
2010	324824.9977852877
2011	334961.69754188147
2012	357561.3001907008
2013	371056.35944112047
2014	386384.6516262434
2015	397260.80668422993
2016	393690.62405719253