Year	Grams per day
1961	116.56
1962	118.54
1963	115.6
1964	117.09
1965	115.07
1966	110.14
1967	110.27
1968	109.56
1969	112.4
1970	112.88
1971	116.46
1972	114.45
1973	119.67
1974	110.54
1975	120.34
1976	114.59
1977	119.39
1978	124.85
1979	115.73
1980	125.25
1981	131.46
1982	122.97
1983	120.78
1984	132.36
1985	133.08
1986	149.77
1987	133.37
1988	145.47
1989	147.51
1990	122.2
1991	117.47
1992	115.91
1993	105.33
1994	105.25
1995	113.71
1996	109.68
1997	106.68
1998	104.85
1999	103.01
2000	103.66
2001	110.75
2002	101.27
2003	105.64
2004	103.31
2005	103.3
2006	105.59
2007	102.53
2008	96.4
2009	96.72
2010	88
2011	80.9
2012	91.31
2013	96.05