Year	Grams per day
1992	61.44
1993	62.94
1994	60.27
1995	61.62
1996	61.57
1997	60.45
1998	69.72
1999	68.08
2000	67.04
2001	70.9
2002	77.05
2003	87.62
2004	85.14
2005	94.13
2006	92.79
2007	94.03
2008	98.93
2009	103.11
2010	112.24
2011	101.02
2012	101.07
2013	97.38