Year	Grams per day
1961	107.17
1962	100.99
1963	76.14
1964	112.13
1965	102.43
1966	109.03
1967	110.61
1968	108.64
1969	108.79
1970	117.9
1971	117.87
1972	120.76
1973	98.78
1974	119.7
1975	112.23
1976	105.57
1977	99.3
1978	110.55
1979	108.56
1980	110.04
1981	102.6
1982	101.72
1983	109.86
1984	113.97
1985	114.77
1986	117.32
1987	109.01
1988	101.16
1989	101.23
1990	115.17
1991	114.19
1992	115.67
1993	117.48
1994	124.97
1995	128.79
1996	123.94
1997	122.41
1998	120.4
1999	130.81
2000	131
2001	130.5
2002	128.42
2003	127.56
2004	131.08
2005	135.81
2006	133.25
2007	133.93
2008	133.32
2009	131.61
2010	131.11
2011	131.74
2012	131.12
2013	132.11