| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,795 | $9,841 |
| 2016 | $20,833 | $11,198 |
| 2017 | $21,651 | $12,034 |
| 2018 | $21,651 | $12,122 |
| 2019 | $23,191 | $13,834 |
| 2020 | $23,976 | $14,619 |
| 2021* | $24,918 | $15,711 |
| 2022* | $25,898 | $16,885 |
| 2023* | $26,915 | $18,146 |
| 2024* | $27,973 | $19,501 |
| 2025* | $29,072 | $20,958 |
