Year	kt
1990	9355846.659535008
1991	9481601.569657998
1992	9471676.055662997
1993	9529523.039750002
1994	9461070.429872002
1995	9894124.281136004
1996	10013909.712451002
1997	10146379.119615005
1998	10245927.279430002
1999	10251558.285023998
2000	10647805.916044997
2001	10977442.979837002
2002	11368770.501733001
2003	12282835.556511996
2004	13262195.66405
2005	14195904.770224996
2006	15148734.180212006
2007	16058158.214678997
2008	16535903.892288001
2009	16934330.031108
2010	18195832.897223998
2011	19410301.74418899
2012	19971471.635000005
2013	20532522.319000002
2014	20808546.94059999
2015	20620384.742000002
2016	20755543.98799999
2017	21305472.432
2018	22135333.697499998
2019	22406640.80999999
2020	21862973.943000004