Year Tonnes 1951 3667 1952 11001 1953 14668 1954 18335 1955 22002 1956 25669 1957 29336 1958 36670 1959 47671 1960 58672 1961 69673 1962 80674 1963 95342 1964 110010 1965 124678 1966 139346 1967 161348 1968 183350 1969 201685 1970 227354 1971 253023 1972 278692 1973 304361 1974 333697 1975 363033 1976 392369 1977 418038 1978 443707 1979 476710 1980 513380 1981 550050 1982 590387 1983 630724 1984 674728 1985 722399 1986 770070 1987 817741 1988 872746 1989 931418 1990 990090 1991 1048762 1992 1107434 1993 1169773 1994 1235779 1995 1316453 1996 1389793 1997 1470467 1998 1547474 1999 1628148 2000 1730824 2001 1840834 2002 1943510 2003 2060854 2004 2174531 2005 2291875 2006 2405552 2007 2559566 2008 2691578 2009 2823590 2010 2962936 2011 3091281 2012 3226960 2013 3358972 2014 3494651