| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,702 | $18,855 |
| 2016 | $26,662 | $20,572 |
| 2017 | $28,392 | $22,341 |
| 2018 | $28,392 | $22,510 |
| 2019 | $30,999 | $22,521 |
| 2020 | $31,582 | $23,104 |
| 2021* | $32,763 | $23,702 |
| 2022* | $33,989 | $24,316 |
| 2023* | $35,260 | $24,946 |
| 2024* | $36,578 | $25,592 |
| 2025* | $37,946 | $26,255 |
