| NAESX | PSPIX | NAESX / PSPIX | |
| Total Expense Ratio | 0.17 | 0.17 | 100% |
| Annual Report Gross Expense Ratio | 0.17 | 0.17 | 100% |
| Fund Existence | 66 years | 10 years | - |
| Gain YTD | 15.348 | 19.617 | 78% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 183B | 1.38B | 13,309% |
| Annual Yield % from dividends | 1.08 | 1.12 | 96% |
| Returns for 1 year | 27.66 | 25.04 | 110% |
| Returns for 3 years | 57.38 | 29.47 | 195% |
| Returns for 5 years | 33.59 | -6.10 | -551% |
| Returns for 10 years | 172.93 | N/A | - |