Year	per Person
1980	3.15941
1981	3.40774
1982	3.54737
1983	3.1685
1984	3.50151
1985	3.4088
1986	3.32768
1987	3.23965
1988	3.11957
1989	6.29831
1990	6.14472
1991	5.95986
1992	2.45185
1993	2.35102
1994	2.33168
1995	2.06222
1996	2.22644
1997	2.15818
1998	2.11391
1999	2.25297
2000	2.093
2001	2.28176
2002	2.24011
2003	2.80321
2004	2.68776
2005	2.55384
2006	2.37122
2007	2.28763
2008	2.08056
2009	2.1774
2010	2.094
2011	2.04078
2012	1.59348
2013	1.44626
2014	1.31072
2015	1.14666
2016	1.13434