Year	Grams per day
1961	101.96
1962	107.4
1963	112.69
1964	105.59
1965	112.56
1966	125.32
1967	123.25
1968	124.98
1969	121.07
1970	118.27
1971	123.26
1972	118.11
1973	128.3
1974	125.66
1975	121.4
1976	125.36
1977	121.61
1978	126.64
1979	140.12
1980	157.02
1981	151.63
1982	140
1983	143.58
1984	145.5
1985	139.25
1986	150.12
1987	155.92
1988	157.96
1989	141.98
1990	147.41
1991	142.74
1992	131.92
1993	136.29
1994	147.09
1995	160.61
1996	169.41
1997	180.25
1998	166.97
1999	165.71
2000	180.05
2001	181.93
2002	161.92
2003	163.04
2004	171.96
2005	170.12
2006	173.95
2007	172.19
2008	171.32
2009	171.2
2010	156.84
2011	156.62
2012	160.73
2013	161.67