Year	Grams per day
1961	146.13
1962	139.29
1963	144.08
1964	143.56
1965	146.95
1966	146.7
1967	150.62
1968	153.19
1969	150.62
1970	150.67
1971	154.64
1972	138.27
1973	154.02
1974	146.39
1975	151.24
1976	141.11
1977	142.64
1978	151.48
1979	141.41
1980	134.47
1981	123.56
1982	127.69
1983	122.13
1984	127.32
1985	126.3
1986	124.8
1987	109.25
1988	109.23
1989	110.92
1990	130.1
1991	118.95
1992	130.78
1993	134.66
1994	135.09
1995	125.77
1996	109.99
1997	110.17
1998	106.27
1999	110.66
2000	119.74
2001	117.9
2002	91.19
2003	104.76
2004	103.03
2005	103.98
2006	108.44
2007	116.19
2008	119.61
2009	107.51
2010	104.83
2011	134.9
2012	133.17
2013	125.99