Year	per Person
1980	0
1981	1.81537
1982	3.50593
1983	2.5404
1984	2.45647
1985	2.37766
1986	2.30442
1987	2.23575
1988	2.16894
1989	2.10109
1990	2.03101
1991	1.95849
1992	1.88559
1993	1.81577
1994	1.75262
1995	1.69771
1996	1.65092
1997	1.40692
1998	1.37483
1999	1.34365
2000	1.31192
2001	2.74801
2002	2.67763
2003	2.60882
2004	2.54397
2005	2.48426
2006	21.57745
2007	21.12598
2008	20.69458
2009	20.26709
2010	19.83367
2011	19.39301
2012	5.68488
2013	5.55225
2014	5.4216
2015	5.29396
2016	5.16943