| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,031 | N/A |
| 2016 | $27,391 | $25,149 |
| 2017 | $28,071 | $23,821 |
| 2018 | $28,071 | N/A |
| 2019 | $30,755 | $25,520 |
| 2020 | $29,987 | $24,752 |
| 2021* | $30,731 | $23,727 |
| 2022* | $31,493 | $22,745 |
| 2023* | $32,274 | $21,803 |
| 2024* | $33,074 | $20,901 |
| 2025* | $33,894 | $20,035 |
