| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,924 | $14,116 |
| 2016 | $23,582 | $13,823 |
| 2017 | $24,370 | $12,355 |
| 2018 | $24,370 | $14,367 |
| 2019 | $25,904 | $14,343 |
| 2020 | $25,904 | $14,343 |
| 2021* | $26,647 | $14,319 |
| 2022* | $27,412 | $14,294 |
| 2023* | $28,199 | $14,270 |
| 2024* | $29,008 | $14,246 |
| 2025* | $29,841 | $14,221 |