Year	kt
1960	20334.073760992043
1961	21700.33475298084
1962	22735.496284515535
1963	23981.276902845144
1964	25511.91589426842
1965	29590.8559355032
1966	39576.84278190799
1967	32727.93163994376
1968	34937.97551683097
1969	41571.81527480281
1970	45276.23445770602
1971	50141.29748870605
1972	54453.84955048428
1973	56485.90331648122
1974	58814.60726729526
1975	59103.84119749192
1976	68136.83932517185
1977	66787.08098425413
1978	68081.21741551864
1979	79524.49829483728
1980	88690.9890056849
1981	91457.25197910413
1982	93767.41529336713
1983	102466.68196312785
1984	108470.14007836337
1985	109549.20512563549
1986	107743.34712556151
1987	109152.43550344268
1988	132480.26441199533
1989	140875.46464231855
1990	104072.30108845024
1991	109979.34789362024
1992	129554.55196423698
1993	133218.1817467278
1994	129398.81061720793
1995	141629.07102100068
1996	142410.9815172624
1997	140732.82455594584
1998	138848.1251993903
1999	138350.21049658212
2000	144535.41758257744
2001	166074.8388003546
2002	169929.06742579592
2003	178868.24208102017
2004	188555.418572605
2005	191230.53844057402
2006	175014.006017803
2007	140384.83725861172
2008	177316.96733664692
2009	188091.14157072603
2010	237076.0500070626
2011	273643.39101219294
2012	276513.80199999997
2013	296172.589
2014	321610.5680000001
2015	302875.8649999999
2016	331669.1489999999