Year	Grams per day
1961	95.36
1962	104.45
1963	107.01
1964	102.84
1965	94.21
1966	86.87
1967	84.87
1968	95.67
1969	84.83
1970	84.46
1971	89.65
1972	93.61
1973	98.74
1974	98.57
1975	100.79
1976	110.38
1977	114.35
1978	108.25
1979	105.08
1980	110.08
1981	107.9
1982	120.01
1983	119.12
1984	119.04
1985	120.13
1986	118.48
1987	112.16
1988	98.07
1989	105.39
1990	70.1
1991	63.98
1992	79.15
1993	78.88
1994	91.43
1995	93.09
1996	98.69
1997	95.53
1998	100.14
1999	98.02
2000	102.82
2001	102.81
2002	102.4
2003	100.9
2004	100.12
2005	100.11
2006	101.39
2007	100.33
2008	107.82
2009	108.1
2010	113.69
2011	117.89
2012	113.89
2013	115.82