Year	kt
1978	1404203.5493662215
1979	1484787.4463322645
1980	1527524.4573656567
1981	1609759.0294711906
1982	1648544.7368894266
1983	1742249.6771187547
1984	1849768.7663121247
1985	1991986.0727010523
1986	1941780.3298554767
1987	2140530.303227927
1988	2247599.103423356
1989	2310428.475940867
1990	2371303.454812275
1991	2407678.897502568
1992	1950177.1122215984
1993	1934532.0470306543
1994	1837013.2311092666
1995	1867820.1019910323
1996	1960344.0067432297
1997	1912903.4176473706
1998	1934419.1363091753
1999	1993052.2050887698
2000	2030760.1732652793
2001	2084162.889029683
2002	2082613.7012536747
2003	2194505.6326470454
2004	2243408.326776376
2005	2288533.953566108
2006	2295538.4954390596
2007	2323449.2326295697
2008	2361728.712863851
2009	2191534.2933396697
2010	2396643.692190916
2011	2336903.5551852286
2012	2281275.1769468933
2013	2252603.29777151
2014	2146805.5728543596
2015	2407395.6110000554
2016	2467113.857520933