| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,684 | $24,865 |
| 2016 | $48,376 | $26,041 |
| 2017 | $50,180 | $27,169 |
| 2018 | $50,180 | $24,497 |
| 2019 | $54,008 | $22,219 |
| 2020 | $55,962 | $24,173 |
| 2021* | $57,988 | $25,220 |
| 2022* | $60,087 | $26,312 |
| 2023* | $62,262 | $27,451 |
| 2024* | $64,516 | $28,640 |
| 2025* | $66,852 | $29,880 |