Year	kt
1960	641086.3618141946
1961	686176.4889854296
1962	752909.877198857
1963	804002.5642209323
1964	875911.6910768471
1965	928597.2248385441
1966	1017431.8681948702
1967	1090034.065769552
1968	1180023.8269904894
1969	1293168.6350904624
1970	1439370.0793440153
1971	1586094.3664204986
1972	1721749.4405745969
1973	1873847.6768393368
1974	2001583.121029375
1975	2119514.274081715
1976	2248052.2191585917
1977	2350310.286708872
1978	2512873.4587807804
1979	2549314.294505892
1980	2598643.7808378167
1981	2604350.4538108967
1982	2640329.243570858
1983	2635299.4274063753
1984	2595980.936986032
1985	2634987.3437281596
1986	2699260.369301381
1987	2585499.7890397357
1988	2632296.1286329012
1989	2676462.048652537
1990	2543425.2349676215
1991	2604619.508680866
1992	2081762.3686267324
1993	2082316.0818462498
1994	1956434.9185211428
1995	1994456.559594677
1996	2038668.7144624179
1997	2104475.68489134
1998	2115645.9262397396
1999	2125479.8730183695
2000	2182538.1745789144
2001	2210718.4860308915
2002	2177621.2011896004
2003	2290150.493081407
2004	2470565.025686059
2005	2482706.1108793453
2006	2553607.142727188
2007	2543017.5809483724
2008	2679900.3259791117
2009	2646027.900785259
2010	2806097.753782646
2011	2933417.295054764
2012	3048004.882199672
2013	3137682.283749489
2014	3198276.4110530745
2015	3210850.682568688
2016	3267378.0653080232