Year	kt
1963	851.9129219392796
1964	776.9017212653807
1965	873.3446935603937
1966	851.9129219392797
1967	959.0717800448494
1968	2684.329395544523
1969	3793.4235769371694
1970	4414.944953949474
1971	5047.182216772336
1972	7635.068640021846
1973	11519.577246348748
1974	12730.472342941686
1975	14707.55327498945
1976	11889.275306812962
1977	13909.219782102953
1978	16802.50895095334
1979	25289.49051291446
1980	25096.60456832444
1981	24142.890731184867
1982	24067.879530510967
1983	23891.06741463678
1984	23130.239522087228
1985	26586.11269599186
1986	31097.500622236344
1987	29768.730781727278
1988	34387.27756607733
1989	38636.126289963184
1990	35314.20168869052
1991	39466.60744028135
1992	51168.35474540955
1993	58957.73621395461
1994	58880.96832825935
1995	60452.15105548887
1996	61859.56229323518
1997	65923.14237603726
1998	55774.42788712476
1999	57867.632237082
2000	63169.73420910083
2001	57734.56790187688
2002	59591.25408280391
2003	63299.39508969189
2004	74005.23645619184
2005	75103.39773711615
2006	82381.79402952043
2007	99238.32346720638
2008	104655.2625210932
2009	108422.49740856903
2010	121728.46952093462
2011	141697.276669581
2012	161656.2348381294
2013	144799.70540044343
2014	187431.01575453262
2015	185495.6911652803
2016	180073.82762134454