Annualized Total Shareholder Return
| Total Shareholder Return As of March 31, 2012* (% return) | ||||
|---|---|---|---|---|
| 1 year | 3 year | 5 year | ||
| Duke Energy |  |
21.8 | 20.2 | 6.3 |
| S&P 500 Index |  |
8.5 | 23.4 | 2.0 |
| PHLX Utility Sector Index |  |
14.9 | 15.4 | 1.6 |
| *Assumes Reinvested Dividends | ||||
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