Year	Grams per day
1961	105.54
1962	110.13
1963	99.93
1964	107.32
1965	106.89
1966	105.99
1967	99.37
1968	93.89
1969	104.88
1970	105.86
1971	95.97
1972	105.12
1973	96.23
1974	110.63
1975	99.55
1976	111.07
1977	89.66
1978	90.95
1979	106.77
1980	95.46
1981	99.33
1982	92.55
1983	86.61
1984	88.68
1985	88.29
1986	75.31
1987	76.11
1988	72.02
1989	64.96
1990	69.15
1991	90.36
1992	97.15
1993	92.75
1994	90.46
1995	90.61
1996	91.4
1997	97.27
1998	104.98
1999	96.54
2000	89.27
2001	76.27
2002	99.76
2003	99.13
2004	97.27
2005	97.42
2006	97.99
2007	97.64
2008	100.28
2009	103.8
2010	105.98
2011	108.69
2012	110.83
2013	111.3