Year	2010 = 100
1972	1.44455265213848
1973	1.93329296610116
1974	2.56095109345654
1975	2.99527992420312
1976	3.02922691152356
1977	3.27239327463594
1978	3.69035050865468
1979	4.66145102905116
1980	5.00549531903788
1981	5.63700558679535
1982	5.83153867728333
1983	7.11454219115645
1984	9.12451682723029
1985	11.2631770287129
1986	16.3469189497561
1987	18.2867124028087
1988	23.2368332035242
1989	28.3292424404754
1990	43.9364300529549
1991	57.8835859093519
1995	100