Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Asset Acquired | Acquired From | Date Announced | Date Completed | Reported Cost |
| --- | --- | --- | --- | --- |
| mPower.com, Inc | Privately Held | May 30, 2003 | July 2, 2003 | Not Disclosed |
| ePiper Separate Account Database | Pensions & Investments | September 7, 2004 | Not Disclosed | Not Disclosed |
| VARDS | Finetre Corporation | January 11, 2005 | January 4, 2005 | US$9 million |
| Ibbotson Associates | Privately Held | December 12, 2005 | March 1, 2006 | US$83 million |
| Aspect Huntley | Privately Held | July 2, 2006 | July 25, 2006 | A$ 30 million |
| Fund Data Business (prev. Micropal & Assirt ) | Standard & Poor's | February 22, 2007 | March 16, 2007 | US$55 million |
Question:
On what date was the asset acquisition that was announced on February 22, 2007 completed?  
Answer:
March 16, 2007