Year	kt
1991	1451147.6356305059
1992	1443514.55
1993	1464218.4319999998
1994	1441237.3430000006
1995	1470756.6930000002
1996	1508710.1430000002
1997	1493459.0899999996
1998	1524991.6230000001
1999	1491973.9550000003
2000	1454141.516
2001	1511196.3689999997
2002	1501306.47
2003	1498427.8750000005
2004	1492395.6600000001
2005	1479788.5139999997
2006	1469509.913
2007	1417493.5179999997
2008	1413833.8520000007
2009	1338322.988
2010	1319547.9479999996
2011	1273226.4039999999
2012	1213208.615
2013	1188324.353
2014	1175907.8909999998
2015	1263786.9241900134
2016	1291006.2542512792