Year	kt
1960	1832574.2486621847
1961	1809826.0498244467
1962	1810221.6123742335
1963	1883440.9107847658
1964	1953039.80619725
1965	2022155.9812099938
1966	2094067.9118712312
1967	2114938.8647099813
1968	2098841.4802686577
1969	2133020.7663502344
1970	2254974.7117844974
1971	2299022.948260754
1972	2370385.114022288
1973	2396954.849357966
1974	2403679.412704341
1975	2478501.0746640093
1976	2543594.5796789224
1977	2585443.7565563642
1978	2570714.0799143044
1979	2586979.0756055373
1980	2720974.21323331
1981	2488068.324808853
1982	2532941.2086346652
1983	2524889.1641890057
1984	2521805.117190668
1985	2871522.637902159
1986	2957936.2939055795
1987	2973034.715297441
1988	2996144.954434984
1989	2867198.26765449
1990	2450302.15797921
1991	2199388.1168644605
1992	1306502.8752457537
1993	1172488.5515064702
1994	1050580.5787996405
1995	1003915.1263175528
1996	976510.8520527094
1997	870255.7629630599
1998	852835.8705059781
1999	864943.0640067025
2000	882210.7285553223
2001	852089.0723753097
2002	857828.0199771603
2003	889636.6372817517
2004	881614.3908326894
2005	880296.897141981
2006	933530.4665521729
2007	928538.2851152383
2008	958651.0840607407
2009	837487.1362308494
2010	892814.9012953117
2011	936402.5833912211
2012	1008596.1887552483
2013	949644.6925804301
2014	905263.0524351087
2015	927244.2976922065
2016	937771.2171131619