Year	Grams per day
1961	98.68
1962	94.51
1963	89.15
1964	103.75
1965	106.51
1966	102.7
1967	102.38
1968	102.59
1969	108.02
1970	108.3
1971	114.06
1972	110.23
1973	118.17
1974	118.78
1975	118.86
1976	123.19
1977	124.99
1978	128.57
1979	136.5
1980	125.82
1981	125.83
1982	109.86
1983	115.17
1984	113.46
1985	109.53
1986	115.05
1987	114.81
1988	122.01
1989	99.38
1990	104.76
1991	95.79
1992	106.86
1993	105.02
1994	107.97
1995	109.4
1996	109.61
1997	105.45
1998	102.58
1999	101.43
2000	103.51
2001	102.39
2002	91.81
2003	94.42
2004	104.57
2005	105.46
2006	107.72
2007	107.4
2008	103.87
2009	105.64
2010	106.64
2011	108.48
2012	106.46
2013	105.71