| Year | Rank | Number |
| 2011 | 17949 | 5 |
| 2010 | 14116 | 7 |
| 2008 | 14462 | 7 |
| 2004 | 10254 | 10 |
| 2003 | 7369 | 15 |
| 2001 | 14321 | 6 |
| 1998 | 15204 | 5 |
| 1997 | 12795 | 6 |
| 1993 | 14459 | 5 |
| 1992 | 14233 | 5 |
| 1991 | 12157 | 6 |
| 1990 | 13929 | 5 |
| 1984 | 11100 | 5 |
| 1983 | 9517 | 6 |
| Year | Rank | Number |
| 2011 | 17949 | 5 |
| 2010 | 14116 | 7 |
| 2008 | 14462 | 7 |
| 2004 | 10254 | 10 |
| 2003 | 7369 | 15 |
| 2001 | 14321 | 6 |
| 1998 | 15204 | 5 |
| 1997 | 12795 | 6 |
| 1993 | 14459 | 5 |
| 1992 | 14233 | 5 |
| 1991 | 12157 | 6 |
| 1990 | 13929 | 5 |
| 1984 | 11100 | 5 |
| 1983 | 9517 | 6 |