Year	Grams per day
1992	101.05
1993	96.99
1994	80.38
1995	105.34
1996	106.81
1997	115.21
1998	123.1
1999	102.17
2000	107.34
2001	110.59
2002	110.53
2003	91.61
2004	96.33
2005	105.29
2006	96.35
2007	103.73
2008	113.04
2009	118
2010	102.32
2011	109.8
2012	104.5
2013	107.23