Year	per Person
1980	6.57631
1981	6.03128
1982	5.7281
1983	9.48777
1984	8.95339
1985	8.51332
1986	8.0058
1987	7.52445
1988	7.17299
1989	6.96743
1990	8.82646
1991	8.67104
1992	7.26428
1993	5.90914
1994	5.90299
1995	5.97389
1996	5.86413
1997	5.61262
1998	7.06292
1999	7.49868
2000	7.21138
2001	7.15996
2002	3.17117
2003	3.09975
2004	2.95781
2005	2.91754
2006	3.06715
2007	3.11236
2008	3.1445
2009	3.96936
2010	4.00385
2011	4.03292
2012	4.05726
2013	4.07809
2014	4.09759
2015	4.1174
2016	4.13791