Year	Grams per day
1961	61.39
1962	62.12
1963	63.65
1964	67.24
1965	76.2
1966	78.58
1967	79.79
1968	84.54
1969	83.88
1970	83.94
1971	85.5
1972	85.56
1973	88.02
1974	63.14
1975	40.6
1976	57.64
1977	62.35
1978	65.01
1979	75.27
1980	66.05
1981	63.22
1982	76.71
1983	80.66
1984	87.42
1985	83.3
1986	84.42
1987	82.31
1988	66.24
1989	75.41
1990	92.24
1991	97.52
1992	98.38
1993	103.76
1994	106.17
1995	116.63
1996	98.35
1997	95.15
1998	95.18
1999	95.79
2000	99.53
2001	90.27
2002	105.67
2003	110.9
2004	113.45
2005	104.93
2006	91.19
2007	100.18
2008	95.67
2009	90.28
2010	88.68
2011	93.21
2012	88.47
2013	101.12