| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,078 | $22,095 |
| 2016 | $37,082 | $23,732 |
| 2017 | $38,492 | $24,572 |
| 2018 | $38,492 | $22,600 |
| 2019 | $40,844 | $22,475 |
| 2020 | $42,214 | $23,845 |
| 2021* | $43,628 | $24,689 |
| 2022* | $45,090 | $25,563 |
| 2023* | $46,600 | $26,468 |
| 2024* | $48,161 | $27,405 |
| 2025* | $49,775 | $28,375 |