Year	Grams per day
1992	32.59
1993	33.59
1994	28.07
1995	40.4
1996	72.9
1997	80.91
1998	75.25
1999	75.49
2000	84.03
2001	81.08
2002	89.63
2003	92.09
2004	103.36
2005	105.59
2006	107.8
2007	117.02
2008	123.69
2009	117.45
2010	85.29
2011	81.25
2012	96.81
2013	93.06