Year	Grams per day
1992	59.9
1993	65.42
1994	94.4
1995	97.76
1996	101.68
1997	101.33
1998	105.92
1999	104.91
2000	102.15
2001	96.11
2002	99.62
2003	100.37
2004	102.59
2005	93.65
2006	95.88
2007	99
2008	110.12
2009	100.41
2010	111.48
2011	106.65
2012	113.67
2013	110.23