| Top Holders
| | | Shares Held | % O/S | Share Change | Filing Date | | Franklin Advisory Services, LLC | 2,636,678 | 9.2 | 0 | 03/31/13 | | BlackRock Institutional Trust Company, N.A. | 2,233,491 | 7.8 | 158,719 | 03/31/13 | | State Street Global Advisors (US) | 2,063,579 | 7.2 | 921,511 | 03/31/13 | | The Vanguard Group, Inc. | 1,655,701 | 5.8 | -49,661 | 03/31/13 | | Dimensional Fund Advisors, LP | 1,567,258 | 5.5 | 6,218 | 03/31/13 | | Royce & Associates, LLC | 1,523,307 | 5.3 | -366,890 | 03/31/13 | | Boston Trust & Investment Management Company | 1,036,886 | 3.6 | 123,630 | 03/31/13 | | Eagle Asset Management, Inc. | 1,019,796 | 3.6 | 97,905 | 03/31/13 | | Wellington Management Company, LLP | 947,081 | 3.3 | 947,081 | 03/31/13 | | First Trust Advisors L.P. | 681,135 | 2.4 | 639,138 | 03/31/13 |
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