Year	kt
1990	6529915.428354
1991	6627839.492764002
1992	6661908.665912001
1993	6754577.752018998
1994	6717809.995341996
1995	7053120.307407002
1996	7103657.357776001
1997	7170820.592845001
1998	7279228.023862001
1999	7190874.982755002
2000	7522848.982393
2001	7773270.878219999
2002	8090933.049476
2003	8885518.073347997
2004	9714080.937687
2005	10509932.36
2006	11283422.969999997
2007	11979605.089999998
2008	12315104.159999998
2009	12603193.429999998
2010	13650211.559999997
2011	14683619.207000004
2012	15046424.835000003
2013	15496037.518999998
2014	15550983.461999997
2015	15348154.712000003
2016	15332252.097999997
2017	15680729.341999998
2018	16265198.317499997
2019	16546520.019999996
2020	16383995.506999997