Year	kt
1960	4889.94409158081
1961	6351.306693662432
1962	6453.499882619189
1963	6090.714061822701
1964	7126.237474343648
1965	6957.901156052065
1966	6764.059334989031
1967	8539.242327882079
1968	10441.952834632388
1969	9488.047030980088
1970	12334.461140274112
1971	13287.972605024534
1972	13751.802872403603
1973	15856.878701277832
1974	14011.751703572087
1975	13741.60880059307
1976	16815.12145146756
1977	19929.41038958416
1978	21983.515859405758
1979	21009.982001500237
1980	20867.264996152833
1981	20184.262184847394
1982	21555.36484336354
1983	18522.628479731164
1984	20765.32427804754
1985	19562.423804405116
1986	20683.77170356331
1987	22116.03879294263
1988	23094.669686753412
1989	23900.0013597852
1990	23344.424446111374
1991	23978.9587328089
1992	25764.71876953848
1993	29166.481348943922
1994	28890.763461894636
1995	27787.89191369747
1996	30105.412531868533
1997	34680.83908992975
1998	38872.49615655748
1999	35280.711790131594
2000	35828.42164683762
2001	42758.62799699547
2002	43011.99037968941
2003	44882.72244314846
2004	39753.056348504804
2005	44325.95694807137
2006	52706.977028392284
2007	51467.11584881891
2008	52210.29673390443
2009	48843.90807126455
2010	50308.19516168059
2011	45687.228866297315
2012	42011.794687087226
2013	46224.37940700269
2014	38523.99528579475
2015	36846.31962441356
2016	38325.32316799961