Year	kt
1960	55490.22347802712
1961	60748.77685110204
1962	59816.157369676825
1963	63526.45463335822
1964	73112.30671321564
1965	83182.21549032436
1966	96737.15644894615
1967	102269.18648023212
1968	119811.73794549037
1969	145069.05012414014
1970	202993.95343581476
1971	234759.1046565742
1972	259007.59173004923
1973	289415.4146274823
1974	305651.99613840523
1975	329067.74394324503
1976	372296.8168137182
1977	405621.06137883867
1978	441718.6578694581
1979	444425.9776062547
1980	445280.72760445724
1981	431733.1235556913
1982	433912.1857828688
1983	452100.385315439
1984	446678.4089319904
1985	463498.27477645077
1986	484841.3455470222
1987	506345.82833442144
1988	552311.5685811145
1989	573207.0878504813
1990	562491.5310060605
1991	617083.8051031292
1992	676268.5355040029
1993	739662.292479288
1994	744749.196785028
1995	817429.2130985493
1996	887281.5414382237
1997	965374.8748067359
1998	917106.1310663989
1999	937629.7911204167
2000	1043765.2804526557
2001	1055105.3728198865
2002	1058629.8969999994
2003	1147818.6709999994
2004	1292624.8339999993
2005	1301884.0089999996
2006	1315473.910999999
2007	1342529.0369999995
2008	1398340.776999999
2009	1405022.0509999997
2010	1585423.7829999998
2011	1627528.277
2012	1694847.0629999998
2013	1779070.7189999996
2014	1810588.5840000003
2015	1874731.748
2016	1901269.827