Year	kt
1990	44646.3
1991	37788.5
1992	28099.3
1993	26972
1994	33545
1995	33989.8
1996	30608.9
1997	30502.5
1998	31838.6
1999	37688
2000	38507.5
2001	39123
2002	41410.7
2003	46350.2
2004	49365.2
2005	50592.5
2006	51916.5
2007	58482.3
2008	59279.7
2009	52386.8
2010	59175.1
2011	65076.7
2012	66758.5
2013	63791.5
2014	62189
2015	63777.6
2016	64079.5
2017	63871.6
2018	63317.6
2019	63231.8
2020	63655