Year	Grams per day
1961	94.95
1962	98.21
1963	100.4
1964	97.79
1965	84.82
1966	75.17
1967	86.32
1968	84.98
1969	96.93
1970	101.16
1971	81.9
1972	96.71
1973	92.73
1974	105.76
1975	102.59
1976	98.82
1977	94.54
1978	90.08
1979	72.99
1980	78.7
1981	73.72
1982	83.92
1983	86.2
1984	80.37
1985	80.43
1986	77.69
1987	80.04
1988	83.99
1989	89.01
1990	75.05
1991	80.61
1992	82.18
1993	76.04
1994	77.87
1995	79.03
1996	90.4
1997	93.93
1998	80.32
1999	77.34
2000	72.82
2001	76.3
2002	65.57
2003	67.15
2004	66.26
2005	64.65
2006	74.6
2007	63.78
2008	69.46
2009	69.75
2010	70.46
2011	67.48
2012	65.22
2013	66.5