Year	per Person
1970	8.25922
1971	7.57385
1972	7.60492
1973	9.99712
1974	7.60032
1975	10.96446
1976	5.66396
1977	7.65116
1978	6.92946
1979	19.12105
1980	19.06781
1981	15.6792
1982	16.40074
1983	15.22397
1984	15.63017
1985	13.24239
1986	13.11782
1987	11.95479
1988	11.88389
1989	12.08132
1990	11.90064
1991	14.08641
1992	22.92151
1993	24.22413
1994	23.96001
1995	23.66322
1996	23.60694
1997	29.29249
1998	32.01497
1999	34.8496
2000	37.83766
2001	39.39139
2002	41.12078
2003	41.04063
2004	46.45552
2005	47.66073
2006	45.16114
2007	47.81307
2008	49.86749
2009	50.52239
2010	66.3323
2011	66.97561
2012	66.9995
2013	71.02507
2014	65.97403
2015	64.72596
2016	63.47566