Year	per Person
1970	2.60497
1971	2.65504
1972	2.62299
1973	2.59727
1974	2.46061
1975	2.25784
1976	2.21887
1977	2.20773
1978	2.17796
1979	2.22285
1980	2.18338
1981	2.14026
1982	1.97166
1983	1.76924
1984	1.90209
1985	1.77682
1986	1.71461
1987	1.75964
1988	1.79011
1989	1.79815
1990	1.82873
1991	1.80159
1992	1.79853
1993	1.80105
1994	1.85566
1995	1.81007
1996	1.81348
1997	1.79586
1998	1.79373
1999	1.74774
2000	1.75706
2001	1.78394
2002	1.69881
2003	1.70587
2004	1.64306
2005	1.58439
2006	1.60946
2007	1.65871
2008	1.71966
2009	1.74045
2010	1.78038
2011	1.89618
2012	1.97922
2013	1.98532
2014	2.11911
2015	2.21024
2016	2.14418