Year	kt
1990	0
1991	0
1992	80.2
1993	85
1994	88.6
1995	92.7
1996	93.5
1997	93.3
1998	95.5
1999	95.5
2000	102.8
2001	106.4
2002	116.1
2003	114
2004	119.3
2005	118.9
2006	125
2007	132.2
2008	133.3
2009	137.3
2010	140.8
2011	141.1
2012	139
2013	142.3
2014	144.1
2015	146.3
2016	146.5
2017	149.3
2018	151.1
2019	152.3
2020	110