Year	Grams per day
1961	68.8
1962	72.53
1963	72.95
1964	76.39
1965	77.84
1966	79.85
1967	84.68
1968	90
1969	94.49
1970	99.53
1971	93.98
1972	98.79
1973	106.44
1974	105.36
1975	119.42
1976	115.06
1977	111.93
1978	119.96
1979	123.21
1980	124.46
1981	124.11
1982	119.74
1983	109.87
1984	126.23
1985	124.17
1986	126.25
1987	121.26
1988	121.7
1989	130.97
1990	141.4
1991	132.01
1992	133.36
1993	135.08
1994	131.64
1995	129.58
1996	131.14
1997	122.7
1998	126.94
1999	128.23
2000	132.12
2001	136.64
2002	137.36
2003	138.14
2004	136.24
2005	127.11
2006	132.58
2007	132.74
2008	133.95
2009	136.31
2010	136.11
2011	134.31
2012	138.99
2013	132.77