Year	kt
1960	760459.5508368365
1961	533451.6507229019
1962	424441.08627464296
1963	417653.3822994629
1964	413619.73589601077
1965	444900.9739002709
1966	482421.5467532887
1967	394964.23499878263
1968	424326.2433088464
1969	513689.6266412108
1970	679148.190604801
1971	749823.1648611091
1972	782226.5853231242
1973	797404.5990119418
1974	791915.07032071
1975	926933.0160005984
1976	929940.6049000634
1977	1020616.8364875972
1978	1140383.5856455048
1979	1172323.5914763743
1980	1148494.5161005408
1981	1151366.0649153106
1982	1277056.0728960035
1983	1352275.2094549914
1984	1486157.036589728
1985	1626645.9997297677
1986	1702824.5982108305
1987	1821223.3253833384
1988	1942460.2593659086
1989	1968028.3323602306
1990	2031988.959022473
1991	2119116.7452960513
1992	2182386.144215565
1993	2302343.571525425
1994	2464546.779494583
1995	2658774.4217146127
1996	2763245.406192709
1997	2720205.448977935
1998	2551648.8285649745
1999	2495912.996381193
2000	2529735.4068474914
2001	2590670.1615662607
2002	2949789.228581672
2003	3506956.3594917622
2004	4059541.860208906
2005	4662253.105361984
2006	5175680.740734543
2007	5272387.799353628
2008	6097523.073253685
2009	5984671.208369051
2010	6922444.160739215
2011	7750998.458358581
2012	7926207.903059466
2013	7862893.806617493
2014	7754767.154575362
2015	7735846.461178708
2016	7483351.168207771