Year	Grams per day
1961	87.36
1962	72.67
1963	63.64
1964	76.76
1965	76.77
1966	81.92
1967	78.36
1968	97.21
1969	95.6
1970	101.98
1971	76.62
1972	87.98
1973	86.51
1974	87.99
1975	84.46
1976	81.39
1977	101.64
1978	95.32
1979	99.08
1980	106.26
1981	87.98
1982	89.74
1983	104.74
1984	96.34
1985	102.84
1986	103.98
1987	91.87
1988	108.96
1989	98.74
1990	102.3
1991	105.24
1992	105.25
1993	111.73
1994	120.11
1995	136.53
1996	149.13
1997	132.6
1998	129.05
1999	129.37
2000	114.37
2001	118.99
2002	106.34
2003	109.3
2004	98.68
2005	84.85
2006	97.53
2007	107.46
2008	109.66
2009	116.19
2010	116.52
2011	116.76
2012	120.53
2013	120.88