Year	Grams per day
1992	68.29
1993	65.48
1994	74.05
1995	68.01
1996	72.4
1997	68.1
1998	67.06
1999	66.4
2000	68.95
2001	77.89
2002	73.2
2003	81.9
2004	76.69
2005	78.61
2006	81.95
2007	102.8
2008	85.88
2009	69.46
2010	64.22
2011	66.95
2012	63.87
2013	64.59