Year	Grams per day
1961	111.87
1962	117.39
1963	109.8
1964	109.27
1965	114.15
1966	111.43
1967	107.91
1968	115.87
1969	99.69
1970	112.88
1971	112.93
1972	109.5
1973	123.91
1974	126.88
1975	104.6
1976	114.23
1977	113.9
1978	112.93
1979	114.3
1980	125.53
1981	119.61
1982	121.34
1983	114.11
1984	114.22
1985	109.6
1986	112.12
1987	112.07
1988	118.93
1989	115.95
1990	119.83
1991	120.42
1992	119.82
1993	115.95
1994	134.58
1995	131.41
1996	130.63
1997	127.8
1998	126.53
1999	126.62
2000	127.34
2001	124.67
2002	123.02
2003	126.72
2004	130.09
2005	135.97
2006	133.78
2007	128.56
2008	133.59
2009	128.12
2010	132.18
2011	130.65
2012	129.7
2013	124.2