Year	per Person
1980	2.38373
1981	2.27041
1982	2.18144
1983	2.09465
1984	2.01085
1985	2.10592
1986	3.59766
1987	3.53656
1988	3.69509
1989	3.53129
1990	3.412
1991	3.27267
1992	3.3696
1993	3.29655
1994	3.28899
1995	3.24071
1996	3.15181
1997	3.27574
1998	2.97837
1999	3.08381
2000	2.51413
2001	2.43129
2002	2.45507
2003	2.3308
2004	2.31218
2005	2.2505
2006	2.4004
2007	2.45278
2008	2.47299
2009	2.59351
2010	2.56355
2011	2.5097
2012	2.41739
2013	2.30867
2014	2.22138
2015	2.13285
2016	2.13512