Year	per Person
1980	5.54602
1981	7.48487
1982	6.39366
1983	3.01278
1984	3.69805
1985	3.77007
1986	3.46438
1987	3.06869
1988	3.196
1989	3.69387
1990	3.56292
1991	3.86668
1992	3.59453
1993	2.79106
1994	2.67395
1995	2.66255
1996	2.9326
1997	3.03137
1998	6.13663
1999	4.98342
2000	5.14629
2001	5.35383
2002	6.19448
2003	5.82759
2004	4.90137
2005	4.18186
2006	4.52569
2007	4.31199
2008	4.59563
2009	4.20289
2010	4.01184
2011	3.79697
2012	3.39536
2013	3.14708
2014	2.88745
2015	2.71124
2016	2.70313