Year	per Person
1980	2.33968
1981	2.61013
1982	2.61826
1983	3.42543
1984	3.62243
1985	3.76229
1986	3.83143
1987	4.3353
1988	4.72435
1989	4.75235
1990	4.65021
1991	5.31205
1992	4.34224
1993	4.20963
1994	4.29427
1995	4.27952
1996	4.00748
1997	3.95302
1998	3.82527
1999	3.0011
2000	2.86555
2001	2.62536
2002	2.45499
2003	1.9154
2004	1.75785
2005	1.63629
2006	1.31468
2007	1.16561
2008	0.96844
2009	0.87939
2010	0.91185
2011	0.86063
2012	0.82074
2013	0.77708
2014	0.74369
2015	0.68106
2016	0.5291