| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,955 | $12,582 |
| 2016 | $21,076 | $14,115 |
| 2017 | $23,377 | $15,974 |
| 2018 | $23,377 | $16,802 |
| 2019 | $23,592 | $14,574 |
| 2020 | $24,045 | $15,027 |
| 2021* | $24,507 | $15,805 |
| 2022* | $24,977 | $16,624 |
| 2023* | $25,457 | $17,485 |
| 2024* | $25,946 | $18,391 |
| 2025* | $26,444 | $19,344 |