Year	per Person
1970	0.66472
1971	0.7064
1972	0.72915
1973	0.7707
1974	0.84188
1975	0.92572
1976	1.01765
1977	1.08718
1978	1.15923
1979	1.25564
1980	1.33284
1981	1.41323
1982	1.50777
1983	1.59892
1984	1.73741