| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,380 | $19,520 |
| 2016 | $39,406 | $20,737 |
| 2017 | $41,994 | $22,190 |
| 2018 | $41,994 | $21,088 |
| 2019 | $45,784 | $23,142 |
| 2020 | $46,488 | $23,846 |
| 2021* | $49,008 | $25,332 |
| 2022* | $51,664 | $26,910 |
| 2023* | $54,464 | $28,586 |
| 2024* | $57,416 | $30,367 |
| 2025* | $60,528 | $32,259 |