Year	Grams per day
1961	95.36
1962	93.87
1963	90.21
1964	85.04
1965	85.52
1966	96.5
1967	83.12
1968	93.15
1969	100.63
1970	102.28
1971	106.79
1972	111.22
1973	108.19
1974	113.6
1975	113.39
1976	118.43
1977	128.33
1978	133.01
1979	132.6
1980	123.14
1981	118.96
1982	125.32
1983	124.52
1984	121.7
1985	114.77
1986	112.53
1987	112.01
1988	102.91
1989	102.69
1990	78.94
1991	69.12
1992	73.79
1993	85.08
1994	102.23
1995	112.46
1996	112.64
1997	116.6
1998	117.29
1999	112.71
2000	110.08
2001	99.55
2002	118.66
2003	126.57
2004	117.48
2005	112.21
2006	108.17
2007	109.77
2008	106.42
2009	106.39
2010	98.37
2011	96.59
2012	106.86
2013	106.17