Datasets:
| <table> | |
| <tr> | |
| <th rowspan="2">Combined operating results<br>Millions of dollars</th> | |
| <th colspan="3">Year Ended December 31</th> | |
| </tr> | |
| <tr> | |
| <th>2007</th> | |
| <th>2006</th> | |
| <th>2005</th> | |
| </tr> | |
| <tr> | |
| <td>Revenue</td> | |
| <td>$ 500</td> | |
| <td>$ 435</td> | |
| <td>$ 487</td> | |
| </tr> | |
| <tr> | |
| <td>Operating income</td> | |
| <td>$ 111</td> | |
| <td>$ 108</td> | |
| <td>$ 100</td> | |
| </tr> | |
| <tr> | |
| <td>Net income</td> | |
| <td>$ 100</td> | |
| <td>$ 122</td> | |
| <td>$ 89</td> | |
| </tr> | |
| </table> |