Year	kt
1960	180061.92582647907
1961	223328.5304943127
1962	272189.0699417305
1963	319358.8204645141
1964	378140.5180647441
1965	433410.4685570237
1966	477763.88481519767
1967	524104.80330259213
1968	564813.6897118681
1969	612286.8027691055
1970	605817.4275583643
1971	667529.8433932844
1972	704041.7431939794
1973	755233.7811202246
1974	808477.781301103
1975	879105.2984509373
1976	959559.900139967
1977	1014795.3738922353
1978	1098066.3392637628
1979	1158144.473014802
1980	1219735.0307371104
1981	1269040.0522004922
1982	1335681.0954524213
1983	1435110.1458874124
1984	1566159.8574341258
1985	1689455.3611879637
1986	1668493.7302781728
1987	1882345.9462296134
1988	2000909.8745906437
1989	2076019.7395429474
1990	2110898.322116304
1991	2139950.7659786916
1992	1692822.4304973413
1993	1691182.507717163
1994	1641368.452424051
1995	1694499.346388018
1996	1751153.3294587631
1997	1733365.397925081
1998	1737802.4739149255
1999	1826758.3244101044
2000	1838937.559797827
2001	1915691.7660085259
2002	1948470.0173985877
2003	2091759.1880642285
2004	2185272.996569884
2005	2304229.186453788
2006	2395635.23169277
2007	2495517.593989579
2008	2572315.238242691
2009	2554703.8323803223
2010	2797378.3200212396
2011	2893565.104515213
2012	2917103.496493006
2013	2995155.1806971747
2014	3060772.9634911474
2015	3081894.583376932
2016	3159443.5491952426