Year	per Person
1997	42.13196
1998	41.43841
1999	40.79989
2000	42.50648
2001	41.93338
2002	41.40189
2003	41.11393
2004	40.59582
2005	39.8398
2006	39.72479
2007	39.1395
2008	38.32071
2009	36.36082
2010	35.29992
2011	34.73896
2012	34.18321
2013	32.55558
2014	32.04335
2015	31.55053
2016	31.07821