Year	per Person
1980	22.17644
1981	27.86125
1982	24.88992
1983	20.03693
1984	18.5192
1985	19.7261
1986	20.0802
1987	20.65056
1988	20.95047
1989	22.58195
1990	20.60328
1991	31.93078
1992	31.03036
1993	29.66493
1994	25.91167
1995	24.32581
1996	22.64815
1997	21.07455
1998	20.10741
1999	19.5878
2000	19.32441
2001	18.91405
2002	18.19954
2003	18.75814
2004	24.19814
2005	22.36724
2006	21.63365
2007	17.36889
2008	16.777
2009	16.37463
2010	16.22355
2011	16.34395
2012	16.69874
2013	17.21427
2014	17.75756
2015	18.20124
2016	18.50199