Year Grams per day 1961 95.62 1962 95.72 1963 90.86 1964 96.36 1965 100.01 1966 100.5 1967 101.16 1968 111.36 1969 131.53 1970 126.76 1971 118.09 1972 117.71 1973 106.62 1974 96.41 1975 103.35 1976 102.43 1977 113.85 1978 125.3 1979 119.8 1980 141.1 1981 130.27 1982 138.76 1983 126.01 1984 135.35 1985 147.59 1986 119.37 1987 115.44 1988 132.67 1989 139.65 1990 135.11 1991 123.71 1992 119.46 1993 111.6 1994 109.38 1995 127.61 1996 135.92 1997 122.19 1998 123.18 1999 122.88 2000 120.77 2001 121.03 2002 106.12 2003 130.16 2004 131.87 2005 136.95 2006 127.44 2007 124.4 2008 125.34 2009 119.69 2010 119.25 2011 120.04 2012 96.58 2013 106.78