| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,906 | $27,550 |
| 2016 | $50,706 | $29,188 |
| 2017 | $52,074 | $29,231 |
| 2018 | $52,074 | $28,583 |
| 2019 | $54,829 | $26,190 |
| 2020 | $56,060 | $27,421 |
| 2021* | $57,574 | $27,462 |
| 2022* | $59,128 | $27,503 |
| 2023* | $60,725 | $27,545 |
| 2024* | $62,364 | $27,586 |
| 2025* | $64,048 | $27,627 |