Year	kt
1990	3838019.5402570004
1991	3730906.740692
1992	3506475.4038650002
1993	3198472.599997
1994	2839358.7225450003
1995	2746260.8362400006
1996	2654664.4742389997
1997	2517460.9269379997
1998	2516228.8745850003
1999	2510998.6701080003
2000	2577216.3523929995
2001	2565856.51822
2002	2599642.599476
2003	2707914.413348
2004	2707329.0976870004
2005	2722434.9000000004
2006	2833981.6
2007	2891014.5999999996
2008	2930278.56
2009	2703712.95
2010	2840620.8
2011	2997334.100000001
2012	2959664.3000000003
2013	2904794.2
2014	2811027.4000000004
2015	2739709.6
2016	2771362.0999999996
2017	2832835
2018	2913540.9999999995
2019	2922190.1999999997
2020	2830714.8000000003