| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,102 | $13,490 |
| 2016 | $32,930 | $15,692 |
| 2017 | $33,858 | $15,352 |
| 2018 | $33,858 | $15,034 |
| 2019 | $35,363 | $16,429 |
| 2020 | $36,041 | $17,107 |
| 2021* | $36,971 | $17,814 |
| 2022* | $37,925 | $18,549 |
| 2023* | $38,903 | $19,315 |
| 2024* | $39,907 | $20,113 |
| 2025* | $40,936 | $20,944 |
