| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | TORTOISE CAPITAL ADVISORS, LLC | 470,451 | 2.93 | $21,212,635 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 432,852 | 2.70 | $19,517,296 | 30-Sep-09 | | KAYNE ANDERSON CAPITAL ADVISORS, L.P. | 2,780,148 | 17.32 | $125,356,873 | 30-Sep-09 | | NEUBERGER BERMAN GROUP, LLC | 1,752,958 | 10.92 | $79,040,876 | 30-Sep-09 | | GOLDMAN SACHS GROUP INC | 229,335 | 1.43 | $10,340,715 | 30-Sep-09 | | WELLINGTON MANAGEMENT COMPANY, LLP | 199,194 | 1.24 | $8,981,657 | 30-Sep-09 | | Energy Income Partners, LLC | 180,469 | 1.12 | $8,137,347 | 30-Sep-09 | | FIDUCIARY ASSET MANAGEMENT, LLC | 148,660 | .93 | $6,703,079 | 30-Sep-09 | | EAGLE GLOBAL ADVISORS LLC | 145,916 | .91 | $6,579,352 | 30-Sep-09 | | Invesco Ltd. | 142,531 | .89 | $6,426,722 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | Tortoise North American Energy Corp | 220,801 | 1.38 | $9,297,930 | 31-Aug-09 | | VANGUARD SMALL-CAP INDEX FUND | 162,477 | 1.01 | $5,889,791 | 30-Jun-09 | | MLP & Strategic Equity Fd | 128,062 | .80 | $5,612,957 | 31-Jul-09 | | Tortoise Power and Energy Infrastructure Fund, Inc. | 117,600 | .73 | $4,952,136 | 31-Aug-09 | | VANGUARD SMALL CAP VALUE INDEX FUND | 105,834 | .66 | $3,836,482 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 102,505 | .64 | $3,715,806 | 30-Jun-09 | | EIP Investment Trust-EIP Growth & Income Fund | 75,485 | .47 | $2,736,331 | 30-Jun-09 | | ENERGY INCOME & GROWTH FUND | 64,127 | .40 | $2,700,387 | 31-Aug-09 | | NORTHERN SMALL CAP VALUE FUND | 51,887 | .32 | $2,339,584 | 30-Sep-09 | | Neuberger & Berman Equity Income Fund | 34,713 | .22 | $1,565,209 | 30-Sep-09 |
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Value shown is computed using the security's price on the report date given.
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