Year	Grams per day
1961	73.86
1962	84.83
1963	74.93
1964	57.96
1965	83.93
1966	87.88
1967	91.59
1968	74.79
1969	72.86
1970	73.31
1971	73.43
1972	74.51
1973	60.21
1974	73.57
1975	65.07
1976	103.4
1977	108.02
1978	111.76
1979	128.68
1980	123.8
1981	133.49
1982	115.38
1983	107.66
1984	108.84
1985	112.57
1986	116.32
1987	117.09
1988	115.99
1989	117.85
1990	115.85
1991	115.9
1992	111.8
1993	111.41
1994	108.16
1995	93.79
1996	95.75
1997	106.74
1998	104.44
1999	103.51
2000	114.5
2001	112.68
2002	117.09
2003	122.04
2004	136.98
2005	135.69
2006	143.17
2007	133.5
2008	133.66
2009	115.09
2010	130.19
2011	113.39
2012	132.65
2013	128.43