Year	2010 = 100
1970	4.04652144074807
1971	4.2731266413895
1972	4.74656964995702
1973	5.98885173230714
1974	7.55080900839543
1975	8.81737021934958
1976	10.8012785187032
1977	12.7587347073988
1978	14.9278077812707
1979	18.0844263198419
1980	22.1293949079685
1981	26.989970241385
1982	32.317866196449
1983	46.2625371983063
1984	67.0274440649627
1985	100