| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $42,520 | $28,405 |
| 2016 | $43,840 | $28,577 |
| 2017 | $45,410 | $30,724 |
| 2018 | $45,410 | $29,503 |
| 2019 | $48,680 | $31,068 |
| 2020 | $50,360 | $32,748 |
| 2021* | $52,097 | $34,484 |
| 2022* | $53,895 | $36,311 |
| 2023* | $55,754 | $38,236 |
| 2024* | $57,678 | $40,262 |
| 2025* | $59,668 | $42,396 |