Year	Grams per day
1961	83.48
1962	89.81
1963	90.71
1964	96.79
1965	91.62
1966	95.48
1967	109.36
1968	92.42
1969	104.4
1970	109.24
1971	115.37
1972	107.86
1973	120.59
1974	116.52
1975	107.81
1976	108.75
1977	105.63
1978	108.24
1979	97.3
1980	91.19
1981	98.05
1982	92.69
1983	98.23
1984	96.28
1985	95.6
1986	93.01
1987	101.24
1988	98.89
1989	98.13
1990	98.75
1991	99.73
1992	103.33
1993	101.38
1994	101.17
1995	102.19
1996	105.88
1997	107.21
1998	110.21
1999	112.29
2000	108.85
2001	111.64
2002	113.21
2003	110.64
2004	112.77
2005	114.17
2006	103.81
2007	102.07
2008	99.55
2009	110.61
2010	104.08
2011	103.35
2012	104.21
2013	107.46