| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,733 | $15,203 |
| 2016 | $25,675 | $13,205 |
| 2017 | $26,310 | $13,190 |
| 2018 | $26,310 | $14,754 |
| 2019 | $27,596 | $16,602 |
| 2020 | $28,407 | $17,413 |
| 2021* | $29,109 | $18,263 |
| 2022* | $29,828 | $19,154 |
| 2023* | $30,564 | $20,089 |
| 2024* | $31,319 | $21,069 |
| 2025* | $32,093 | $22,097 |
