Year	per Person
1980	21.688
1981	21.4616
1982	20.43618
1983	20.56642
1984	20.63319
1985	20.59388
1986	19.66839
1987	19.67772
1988	19.30492
1989	18.68925
1990	18.27813
1991	17.19666
1992	16.52773
1993	15.83114
1994	15.3806
1995	15.27485
1996	15.14183
1997	15.2967
1998	14.13687
1999	14.51299
2000	14.70017
2001	14.57555
2002	14.55104
2003	13.80331
2004	13.66101
2005	13.82905
2006	13.48486
2007	13.82173
2008	12.76712
2009	13.75781
2010	15.46337
2011	17.44185
2012	19.23227
2013	20.94956
2014	23.59576
2015	20.45899
2016	20.31608