Year	Grams per day
1961	114.66
1962	115.35
1963	110.41
1964	104.98
1965	112.62
1966	100.78
1967	103.55
1968	113.89
1969	113.07
1970	113.04
1971	111.7
1972	117.85
1973	118.76
1974	126.13
1975	131.59
1976	131.17
1977	127.34
1978	129.74
1979	143.35
1980	145.92
1981	133.78
1982	135.57
1983	128.59
1984	131.89
1985	126.63
1986	134.97
1987	132.65
1988	129.64
1989	132.43
1990	132.28
1991	130.25
1992	137.1
1993	138.24
1994	142.18
1995	144.45
1996	140.63
1997	138.42
1998	136.41
1999	107.26
2000	109.48
2001	108.76
2002	108.1
2003	113.94
2004	114.92
2005	115.22
2006	115.05
2007	114.26
2008	115.97
2009	115.4
2010	116.65
2011	116.45
2012	116.94
2013	117.2