| 2012: |
March 5, June 4, September 10, December 3 |
| 2011: |
March 7, June 13, September 12, November 28 |
| 2010: |
March 1, June 7, September 13, November 11, December 10 |
| 2009: |
March 2, June 1, September 14, December 1 |
| 2008: |
March 3, June 2, September 8, December 1 |
| 2007: |
March 5, September 10, December 13 |
| 2006: |
March 6, June 5, September 11, December 4 |
| 2005: |
March 7, June 6, September 12, December 12 |
| 2004: |
June 7, July 12, September 9, December 13 |
| 2003: |
March 3, June 2 |
| 2002: |
March 4, June 3, September 9, December 2 |
| 2001: |
March 5, June 4, September 10, December 3 |
| 2000: |
March 6, June 5, September 11, October 2, December 11 |