| 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 | 6.587 | 6.734 | 98% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 250 | 250 | 100% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 172B | 172B | 100% |
| Annual Yield % from dividends | 0.92 | 1.18 | 78% |
| Returns for 1 year | 12.82 | 13.22 | 97% |
| Returns for 3 years | 36.74 | 37.38 | 98% |
| Returns for 5 years | 17.78 | 19.43 | 92% |
| Returns for 10 years | 116.95 | 120.33 | 97% |