Year	kt
1966	55710.2006602693
1967	68229.2832560468
1968	89179.3536334222
1969	103867.051622317
1970	139091.480762223
1971	172113.321421913
1972	211884.482051828
1973	240648.362461846
1974	262142.002232797
1975	279244.832825025
1976	306910.182310676
1977	306459.51483789
1978	321652.642014188
1979	341975.96534899
1980	335976.979941128
1981	336343.115200763
1982	304979.405575437
1983	318539.797580101
1984	342436.47178915
1985	356463.881443768
1986	332184.590364877
1987	345908.157211091
1988	345773.115962912
1989	401691.446146461
1990	417457.511871385
1991	453586.672478003
1992	449147.404534652
1993	458712.965533224
1994	456087.125259106
1995	496357.364757133
1996	540831.155282213
1997	533306.688614363
1998	554868.061833105
1999	573587.671795566
2000	591119.843812647
2001	612578.281234266
2002	618478.708176479
2003	648969.761795617
2004	669990.722079465
2005	696437.869383068
2006	694904.861261633
2007	686761.904453532
2008	703569.849612285
2009	663557.234759295
2010	711297.386953427
2011	648631.5441765
2012	637345.369277687
2013	629551.65892411
2014	549316.881345415