Year	kt
1960	18342.455794461686
1961	19316.046866354565
1962	20779.737640588606
1963	23145.132074816353
1964	24566.699173219233
1965	27860.939043857445
1966	30647.790244765187
1967	31961.69971041054
1968	36554.703116254386
1969	41212.076726467014
1970	43688.436353360594
1971	44112.485653263204
1972	35567.13502933263
1973	37778.24923596776
1974	37623.01690296768
1975	37267.118383406545
1976	36002.54279262551
1977	36490.95671840621
1978	39531.2387525295
1979	43582.42402838492
1980	45324.05508155641
1981	44676.62266831225
1982	42404.92999026246
1983	43991.32871043388
1984	43669.50558104351
1985	43991.32871043388
1986	44309.365685360855
1987	47944.07397024049
1988	49121.56800836295
1989	48867.89565931407
1990	48447.632513874865
1991	54018.65915769568
1992	54345.70323192807
1993	53285.629336140315
1994	52334.57013176334
1995	64292.51868632074
1996	64934.18279920487
1997	65375.55869188239
1998	65954.16910581259
1999	70994.75598101219
2000	71884.92584859712
2001	78457.34670426576
2002	81895.62781781246
2003	90291.00315187497
2004	95021.73052265625
2005	96524.60635406249
2006	104401.74864281253
2007	109317.5592440625
2008	116517.29690929689
2009	124279.68759515625
2010	135051.5316084375
2011	140156.1271047656
2012	142143.92100000003
2013	154182.682
2014	177383.79099999997
2015	160244.23299999998
2016	169789.43400000004