| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $58,260 | $32,151 |
| 2016 | $59,560 | $31,800 |
| 2017 | $60,350 | $30,356 |
| 2018 | $60,350 | $29,322 |
| 2019 | $63,360 | $29,697 |
| 2020 | $63,276 | $29,613 |
| 2021* | $64,118 | $29,290 |
| 2022* | $64,970 | $28,971 |
| 2023* | $65,834 | $28,655 |
| 2024* | $66,710 | $28,343 |
| 2025* | $67,597 | $28,034 |