| NBMTX | PMBJX | NBMTX / PMBJX | |
| Total Expense Ratio | 0.94 | 0.78 | 121% |
| Annual Report Gross Expense Ratio | 0.94 | 0.78 | 121% |
| Fund Existence | 32 years | 25 years | - |
| Gain YTD | 5.029 | -0.564 | -892% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 1000 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 1.96B | 30.8B | 6% |
| Annual Yield % from dividends | 0.00 | 0.06 | - |
| Returns for 1 year | -7.62 | -6.46 | 118% |
| Returns for 3 years | 26.26 | 32.39 | 81% |
| Returns for 5 years | -13.68 | 25.52 | -54% |
| Returns for 10 years | 30.85 | 89.12 | 35% |