| December 2006 |
4,359,500 |
| November 2006 |
4,322,200 |
| October 2006 |
4,297,500 |
| September 2006 |
4,259,800 |
| August 2006 |
4,190,100 |
| July 2006 |
4,141,800 |
| June 2006 |
4,076,300 |
| May 2006 |
4,019,900 |
| April 2006 |
3,970,600 |
| March 2006 |
3,891,900 |
| February 2006 |
3,796,100 |
| January 2006 |
3,731,200 |
|
