Year	kt
1990	64206.4
1991	45545.1
1992	67338.2
1993	89562
1994	102116
1995	100068.8
1996	98880.8
1997	118910.2
1998	91784.1
1999	72714.4
2000	87630.5
2001	97553.3
2002	91164.8
2003	81278.1
2004	88108.3
2005	85127.9
2006	82958.1
2007	76650.1
2008	88136.3
2009	94205.5
2010	108550.3
2011	113039.8
2012	129004.3
2013	139103.6
2014	134045.9
2015	133169.7
2016	143281.1
2017	156456.4
2018	168154.3
2019	180687.6
2020	163511.5