Year	Grams per day
1992	58.58
1993	57.21
1994	62.87
1995	55.2
1996	62.98
1997	72.42
1998	59.16
1999	68.94
2000	64.94
2001	67.61
2002	66.81
2003	84.39
2004	79.71
2005	92.62