Year	per Person
1980	22.07509
1981	22.166
1982	21.93449
1983	21.59293
1984	21.09347
1985	20.46323
1986	20.08479
1987	19.44183
1988	17.28472
1989	17.02821
1990	17.09013
1991	16.69824
1992	16.33467
1993	15.91873
1994	15.89155
1995	15.84272
1996	15.78328
1997	15.66008
1998	15.17221
1999	15.29917
2000	16.03566
2001	16.41376
2002	16.57119
2003	16.61149
2004	16.77128
2005	17.64903
2006	18.06271
2007	20.15511
2008	20.55255
2009	22.69022
2010	25.15346
2011	27.37082
2012	25.05411
2013	27.32088
2014	29.57616
2015	24.51327
2016	24.34204