Year	kt
1990	2173364.2
1991	2302185.2
1992	2418175.3
1993	2645411.7
1994	2767666.4
1995	3088620.2
1996	3070505.1
1997	3134112.6
1998	3236278.6
1999	3153661.1
2000	3346525.8
2001	3529081.3
2002	3796157.1
2003	4424412.6
2004	5113216.6
2005	5824625.1
2006	6437470.3
2007	6993182.8
2008	7199604.7
2009	7719071.4
2010	8474922.7
2011	9282553.7
2012	9540539.7
2013	9979128
2014	10021043.4
2015	9859281.2
2016	9860914
2017	10089273.2
2018	10567262
2019	10762824
2020	10944686.2