Year	per Person
1980	20.45437
1981	19.08707
1982	18.08087
1983	16.79851
1984	14.51418
1985	13.58779
1986	12.83852
1987	12.44718
1988	10.25467
1989	9.14935
1990	9.57106
1991	9.90182
1992	10.85373
1993	10.73564
1994	10.17501
1995	10.67494
1996	11.69761
1997	12.09786
1998	11.96952
1999	11.58013
2000	10.93267
2001	10.4636
2002	10.25604
2003	9.80414
2004	9.10523
2005	8.75595
2006	8.05912
2007	7.52908
2008	6.72373
2009	6.16515
2010	6.04361
2011	6.62101
2012	6.44845
2013	6.39364
2014	5.88476
2015	5.30273
2016	5.27118