Year Tonnes 1950 3667 1951 7334 1952 14668 1953 22002 1954 33003 1955 44004 1956 55005 1957 69673 1958 80674 1959 95342 1960 110010 1961 128345 1962 146680 1963 168682 1964 194351 1965 223687 1966 249356 1967 275025 1968 304361 1969 333697 1970 363033 1971 399703 1972 436373 1973 473043 1974 506046 1975 564718 1976 612389 1977 693063 1978 799406 1979 894748 1980 993757 1981 1096433 1982 1210110 1983 1323787 1984 1437464 1985 1551141 1986 1664818 1987 1778495 1988 1892172 1989 2013183 1990 2115859 1991 2222202 1992 2332212 1993 2442222 1994 2555899 1995 2673243 1996 2797921 1997 2926266 1998 3058278 1999 3193957 2000 3336970 2001 3483650 2002 3630330 2003 3784344 2004 3934691 2005 4096039 2006 4261054 2007 4433403 2008 4613086 2009 4800103 2010 4987120 2011 5188805 2012 5386823 2013 5584841 2014 5782859