| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,069 | $25,425 |
| 2016 | $33,153 | $25,756 |
| 2017 | $33,871 | $25,693 |
| 2018 | $33,871 | $24,864 |
| 2019 | $36,167 | $26,705 |
| 2020 | $37,029 | $27,567 |
| 2021* | $37,833 | $27,925 |
| 2022* | $38,653 | $28,288 |
| 2023* | $39,492 | $28,656 |
| 2024* | $40,349 | $29,029 |
| 2025* | $41,225 | $29,406 |
