| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,020 | $21,757 |
| 2016 | $41,911 | $23,235 |
| 2017 | $43,527 | $23,956 |
| 2018 | $43,527 | $23,875 |
| 2019 | $45,420 | $23,219 |
| 2020 | $47,154 | $24,953 |
| 2021* | $48,974 | $25,727 |
| 2022* | $50,865 | $26,524 |
| 2023* | $52,828 | $27,346 |
| 2024* | $54,867 | $28,194 |
| 2025* | $56,985 | $29,068 |