Year	Grams per day
1961	1143.93
1962	1155.06
1963	1405.84
1964	1082.47
1965	764.42
1966	492.48
1967	349.61
1968	188.48
1969	310.72
1970	323.96
1971	590.41
1972	92.65
1973	90.29
1974	87.43
1975	81.91
1976	90.08
1977	87.24
1978	81.46
1979	84.98
1980	95.66
1981	109.61
1982	96.71
1983	80.79
1984	74.56
1985	78.08
1986	79.18
1987	69.66
1988	84.3
1989	86.88
1990	90.4
1991	91.24
1992	91.71
1993	82.22
1994	86.73
1995	89.28
1996	88.07
1997	85.93
1998	89.44
1999	87.53
2000	86.6
2001	86.66
2002	86.36
2003	83.54
2004	93.12
2005	79.66
2006	85.01
2007	87.29
2008	89.19
2009	87.58
2010	87.63
2011	79.64
2012	87.92
2013	90.13