Year	kt
1978	879682.5196997466
1979	936678.9912534881
1980	979885.8184778756
1981	1052270.5760931596
1982	1115019.982860015
1983	1197910.1004296807
1984	1297341.2661262765
1985	1422519.2638021668
1986	1376550.1576663787
1987	1585890.661229391
1988	1696430.7556976234
1989	1706963.3034365654
1990	1757853.3985779001
1991	1766760.1168000929
1992	1262888.90553054
1993	1218097.3870418202
1994	1120833.0607201203
1995	1093091.7888191177
1996	1108579.927044997
1997	1074468.3550868551
1998	1067241.2958336251
1999	1097278.4253851953
2000	1111274.0881587944
2001	1135709.2598139136
2002	1134335.5430456342
2003	1205676.4953208724
2004	1232294.1040997903
2005	1255230.0042282394
2006	1274133.3809401265
2007	1312518.1406266415
2008	1323733.3196454775
2009	1217910.3050189272
2010	1351053.7606608507
2011	1395822.4887193085
2012	1361779.5634298492
2013	1346962.133669727
2014	1342627.658314022
2015	1265736.7147587012
2016	1270486.9759507345