| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,750 | $16,753 |
| 2016 | $28,934 | $18,854 |
| 2017 | $29,704 | $19,475 |
| 2018 | $29,704 | $20,400 |
| 2019 | $32,962 | $19,973 |
| 2020 | $33,394 | $20,405 |
| 2021* | $34,282 | $21,076 |
| 2022* | $35,194 | $21,770 |
| 2023* | $36,130 | $22,486 |
| 2024* | $37,091 | $23,226 |
| 2025* | $38,078 | $23,990 |
