Year	Grams per day
1961	98.17
1962	95.04
1963	96.16
1964	87.23
1965	84.03
1966	81.61
1967	78.66
1968	75.28
1969	85.85
1970	82.29
1971	85.81
1972	83.48
1973	76.1
1974	83.02
1975	76.67
1976	68.1
1977	67.11
1978	70.53
1979	74.39
1980	79.48
1981	81.62
1982	79.41
1983	80.11
1984	80.76
1985	80.92
1986	95.61
1987	95.23
1988	87.69
1989	101.54
1990	113.05
1991	112.53
1992	109.58
1993	126.61
1994	129.8
1995	116.84
1996	106.33
1997	103.26
1998	91.8
1999	86.66
2000	89.74
2001	94.17
2002	94.33
2003	91.03
2004	98.5
2005	99.19
2006	96.59
2007	98.28
2008	101.39
2009	98.54
2010	100.8
2011	98.62
2012	93.6
2013	82.99