| NPFFX | RNPFX | NPFFX / RNPFX | |
| Total Expense Ratio | 0.77 | 0.45 | 171% |
| Annual Report Gross Expense Ratio | 0.77 | 0.45 | 171% |
| Fund Existence | 25 years | 24 years | - |
| Gain YTD | 6.715 | 6.890 | 97% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 250 | 250 | 100% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 170B | 170B | 100% |
| Annual Yield % from dividends | 0.92 | 1.19 | 78% |
| Returns for 1 year | 8.18 | 8.57 | 95% |
| Returns for 3 years | 39.48 | 40.96 | 96% |
| Returns for 5 years | 14.70 | 16.32 | 90% |
| Returns for 10 years | 111.81 | 115.14 | 97% |