Year	kt
1960	42330.88760588102
1961	41004.266281360244
1962	37016.600305415086
1963	44838.40640724697
1964	44238.72022514293
1965	50658.984825461695
1966	60502.83250469879
1967	56510.047349089866
1968	61243.63226627404
1969	73083.87252331559
1970	73577.73903103243
1971	74331.09472076995
1972	80977.36602800997
1973	84170.7570906196
1974	109487.69357518818
1975	110253.60519308799
1976	122537.48824519722
1977	128752.67268553186
1978	132653.3810346173
1979	159008.27424726865
1980	181148.56090677733
1981	203803.6406209399
1982	208156.3623838679
1983	223030.9519467968
1984	227626.42165419567
1985	239278.32298880283
1986	239228.09927615375
1987	234239.2104863363
1988	267014.3682993063
1989	273271.40583351534
1990	245531.17521362443
1991	262984.87226521835
1992	300521.9900645753
1993	298396.11818040686
1994	289585.2310507269
1995	287737.8680722717
1996	272201.5454234633
1997	287453.3741735896
1998	315496.34418653994
1999	329406.9874143077
2000	329192.693308807
2001	360645.89537998557
2002	378347.3274395435
2003	409247.8222239828
2004	376371.49802521645
2005	388388.9726312359
2006	369350.8406109438
2007	328944.20580318116
2008	390069.350918187
2009	397659.79422149365
2010	444070.3535663246
2011	450807.60750608135
2012	464429.21699999995
2013	474652.81299999997
2014	487821.0099999999
2015	446413.246
2016	465837.345