Year	Grams per day
1961	97.06
1962	99.03
1963	98.06
1964	101.28
1965	106.07
1966	103.21
1967	104.27
1968	108.7
1969	109.57
1970	114.69
1971	112.29
1972	111.66
1973	111.54
1974	107.63
1975	103.06
1976	96.81
1977	99.14
1978	100.23
1979	100.63
1980	100.11
1981	98.05
1982	98.11
1983	99.2
1984	105.77
1985	107.88
1986	111.53
1987	113.74
1988	111.78
1989	116.53
1990	117.92
1991	119.46
1992	119.55
1993	117.37
1994	120.16
1995	124.17
1996	136.7
1997	140.4
1998	141.55
1999	144.29
2000	144.54
2001	120.15
2002	121.55
2003	107.39
2004	74.88
2005	73.53
2006	70.6
2007	71.57
2008	69.38
2009	71.64
2010	75.55
2011	75.42
2012	76.92
2013	76.16