Year	Grams per day
1961	108.17
1962	110.2
1963	110.45
1964	116.58
1965	119.25
1966	124.93
1967	129.3
1968	134.62
1969	144.05
1970	126.04
1971	135.64
1972	139.16
1973	137.65
1974	136.63
1975	142.43
1976	145.7
1977	151.59
1978	150.22
1979	134.16
1980	153.11
1981	128.78
1982	119.12
1983	121.84
1984	123.57
1985	117.84
1986	123.47
1987	133.28
1988	140.14
1989	155.67
1990	141.78
1991	141.29
1992	138.66
1993	144.85
1994	143.74
1995	108.95
1996	139.53
1997	129.96
1998	136.5
1999	139.08
2000	160.57
2001	156.55
2002	156.69
2003	153.9
2004	136.36
2005	142.95
2006	131.45
2007	131.61
2008	150.96
2009	137.27
2010	137.16
2011	137.53
2012	143.21
2013	134.57