Year	Grams per day
1961	78.06
1962	78.6
1963	80.58
1964	78.69
1965	83.87
1966	87.45
1967	93.32
1968	74.66
1969	77.02
1970	81.7
1971	82.37
1972	80.68
1973	87.2
1974	89.5
1975	102.28
1976	99.21
1977	112.08
1978	126.07
1979	103.48
1980	114.27
1981	130.86
1982	147.38
1983	141.95
1984	139.85
1985	139.63
1986	142.16
1987	136.88
1988	135.25
1989	131.59
1990	106.27
1991	107.1
1992	112.31
1993	104.51
1994	104.28
1995	95.05
1996	98.22
1997	81.52
1998	96.4
1999	112.11
2000	106.06
2001	103.82
2002	108.43
2003	99.11
2004	78.17
2005	73.14
2006	97.44
2007	86.33
2008	86.11
2009	82.24
2010	91.56
2011	89.37
2012	87.57
2013	95.29