| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | N/A | N/A |
| 2016 | $25,432 | N/A |
| 2017 | $24,274 | $14,980 |
| 2018 | $24,274 | $19,524 |
| 2019 | $25,224 | $18,999 |
| 2020 | $25,973 | $19,748 |
| 2021* | $26,357 | $20,526 |
| 2022* | $26,747 | $21,335 |
| 2023* | $27,143 | $22,175 |
| 2024* | $27,545 | $23,049 |
| 2025* | $27,953 | $23,957 |