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:
| Region | Date | Label | Format |
| --- | --- | --- | --- |
| Australia[citation needed] | March 4, 2011 | Warner Music Group | CD, digital download |
| United Kingdom | March 7, 2011 | Atlantic Records | CD, digital download |
| France | March 7, 2011 | Atlantic Records | CD, digital download |
| United States | March 8, 2011 | Atlantic Records | CD, digital download |
| Canada | March 8, 2011 | Warner Music Group | CD, digital download |
| Japan | March 23, 2011 | CD, digital download |  |
| Germany | April 29, 2011 | Atlantic Records | CD, digital download |
| Austria | April 29, 2011 | Atlantic Records | CD, digital download |
| Switzerland | April 29, 2011 | Atlantic Records | CD, digital download |
Question:
how many regions had a release date after march 10, 2011?
Answer:
4