| NBFAX | NPFFX | NBFAX / NPFFX | |
| Total Expense Ratio | 1.33 | 0.77 | 173% |
| Annual Report Gross Expense Ratio | 1.33 | 0.77 | 173% |
| Fund Existence | 30 years | 25 years | - |
| Gain YTD | 8.698 | 9.416 | 92% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 250 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 857M | 166B | 1% |
| Annual Yield % from dividends | 0.07 | 0.94 | 8% |
| Returns for 1 year | 3.94 | 8.75 | 45% |
| Returns for 3 years | 55.69 | 42.49 | 131% |
| Returns for 5 years | 1.17 | 15.00 | 8% |
| Returns for 10 years | -21.25 | 111.10 | -19% |