Year	Grams per day
1993	94.34
1994	97.59
1995	116.7
1996	117.06
1997	118.34
1998	110.65
1999	99.2
2000	99.6
2001	89.61
2002	87.26
2003	86.15
2004	107.94
2005	130.83
2006	121.17
2007	111.24
2008	139.91
2009	142.52
2010	143.87
2011	132.92
2012	121.95
2013	136.13