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| Rank | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 |
| 1st | America | Europe | Japan | Corporate Bond | Corporate Bond | Corporate Bond | Emerging Markets | Emerging Markets | Emerging Markets | Europe |
| 2nd | Europe | America | Emerging Markets | Europe | Emerging Markets | Asia Pacific | Asia Pacific | Asia Pacific | Japan | Asia Pacific |
| 3rd | UK | Corporate Bond | Asia Pacific | America | Asia Pacific | Emerging Markets | Europe | Europe | Asia Pacific | UK |
| 4th | Corporate Bond | UK | America | UK | America | Japan | Japan | UK | Europe | Emerging Markets |
| 5th | Emerging Markets | Japan | UK | Asia Pacific | UK | UK | UK | Japan | UK | America |
| 6th | Japan | Asia Pacific | Europe | Emerging Markets | Europe | Europe | America | Corporate Bond | America | Corporate Bond |
| 7th | Asia Pacific | Emerging Markets | Corporate Bond | Japan | Japan | America | Corporate Bond | America | Corporate Bond | Japan |