Year	per person
1992	9.815
1993	8.282
1994	8.388
1995	9.331
1996	10.7
1997	12.08
1998	13.63
1999	14.13
2000	14
2001	15.83
2002	17.67
2003	19.02
2004	20.2
2005	20.99
2006	19.64
2007	20.38
2008	20.29