What is the profitability index

Year	Cash Flow	Present Value Factor @12%	Present Value
0	-635000000	1	-635000000
1	89000000	0.892857143	79464285.71
2	105000000	0.797193878	83705357.14
3	130000000	0.711780248	92531433.22
4	173000000	0.635518078	109944527.6
5	205000000	0.567426858	116322505.4
6	155000000	0.506631121	78527823.78
7	145000000	0.452349215	65590636.22
8	122000000	0.403883228	49273753.81
9	-45000000	0.360610025	-16227451.12
		NPV	24132970.75
		IRR	0.1302
		MIRR	0.1245