Year	kt
1960	6909.800211225757
1961	8016.728293177176
1962	7782.497777542405
1963	7586.046377332597
1964	7506.710234940174
1965	8436.076474394267
1966	8930.982886461285
1967	9214.326252148507
1968	9297.440306083427
1969	9063.209790448653
1970	8160.288931792034
1971	10437.054628231246
1972	11999.982895093812
1973	15415.131439752633
1974	18856.5792581327
1975	23590.448527956807
1976	26840.28735208209
1977	31720.681146924562
1978	35669.32924421436
1979	36725.057232167186
1980	41297.37382056079
1981	39734.445553698235
1982	42451.52055243259
1983	42329.363229601186
1984	56721.71690137116
1985	63469.983553541075
1986	63969.71805603309
1987	70414.44226965228
1988	70314.49536915391
1989	73831.14557187549
1990	94027.8229466638
1991	104069.23458671119
1992	116188.10028064632
1993	135421.57910688556
1994	146960.18804145878
1995	172981.07734387572
1996	186897.56961788054
1997	195052.0811172445
1998	169475.22723723232
1999	213801.55918495017
2000	200799.31593980704
2001	229048.87363403203
2002	222649.13043199957
2003	249545.74702302992
2004	263185.7526955645
2005	280685.5113246244
2006	310398.6047626323
2007	343694.964555695
2008	370458.8675780196
2009	404485.151998964
2010	447381.1265950754
2011	495552.46554724005
2012	536877.9962470002
2013	580279.0197017974
2014	616583.553718857
2015	668375.0239062726
2016	693937.1318342064