Year	Grams per day
1992	110.3
1993	121.84
1994	120.97
1995	79.49
1996	114.62
1997	100.84
1998	96.96
1999	87.06
2000	92.78
2001	116.53
2002	110.16
2003	96.36
2004	100.66
2005	105.53
2006	88.19
2007	80.17
2008	96.42
2009	90.8
2010	98.26
2011	102.83
2012	109.34
2013	116.74