Year	kt
1991	132276.024
1992	130255.507
1993	136815.77
1994	140141.739
1995	154135.011
1996	172374.669
1997	164783.979
1998	166573.475
1999	164893.989
2000	164567.626
2001	173126.404
2002	173082.4
2003	173779.13
2004	174490.528
2005	178146.527
2006	181615.509
2007	175198.259
2008	176727.398
2009	166577.142
2010	173845.136
2011	159397.156
2012	159910.536
2013	167427.886
2014	145147.194
2015	149224.898
2016	161080.309