Year	kt
1990	6243759.680257001
1991	6305399.720692001
1992	6287917.303865002
1993	6321620.339997001
1994	6231096.992545001
1995	6542003.546239999
1996	6550647.534239
1997	6524740.406938002
1998	6588210.889585001
1999	6527788.670108
2000	6792280.742393
2001	7035679.658219999
2002	7344268.219475999
2003	8087901.583348001
2004	8874602.047687002
2005	9663246.6
2006	10403909.249999996
2007	11042154.87
2008	11378270.629999997
2009	11660926.989999998
2010	12652493.224000001
2011	13619083.75
2012	13934530.299999997
2013	14412246.33
2014	14427628.7886
2015	14263640.030000001
2016	14269982.399999995
2017	14577571.799999997
2018	15162115.399999997
2019	15468044.3
2020	15488347.62