| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,360 | $28,911 |
| 2016 | $46,590 | $29,136 |
| 2017 | $47,930 | $30,061 |
| 2018 | $47,930 | $29,820 |
| 2019 | $50,380 | $30,448 |
| 2020 | $51,670 | $31,738 |
| 2021* | $53,070 | $32,408 |
| 2022* | $54,508 | $33,091 |
| 2023* | $55,986 | $33,790 |
| 2024* | $57,503 | $34,503 |
| 2025* | $59,061 | $35,231 |