Year	Grams per day
1961	126.59
1962	123.15
1963	117.51
1964	119.23
1965	126.25
1966	128.2
1967	126.37
1968	121.74
1969	121.55
1970	124.87
1971	129.95
1972	131.13
1973	129.68
1974	125.66
1975	126.88
1976	126.59
1977	118.15
1978	116.51
1979	122.13
1980	122.66
1981	121.75
1982	123.21
1983	128.39
1984	128.69
1985	125.5
1986	119.52
1987	115.67
1988	118.89
1989	119.12
1990	118.2
1991	118.92
1992	121.12
1993	125.82
1994	133.57
1995	117.35
1996	122.55
1997	119.61
1998	126.15
1999	127.7
2000	128.74
2001	122.68
2002	115.24
2003	114.69
2004	113.23
2005	114.83
2006	112.84
2007	114.07
2008	111.38
2009	110.93
2010	105.94
2011	110
2012	110
2013	115.24