| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,060 | $20,936 |
| 2016 | $33,620 | $18,660 |
| 2017 | $34,690 | $20,871 |
| 2018 | $34,690 | $19,608 |
| 2019 | $37,160 | $19,363 |
| 2020 | $37,910 | $20,113 |
| 2021* | $38,676 | $19,862 |
| 2022* | $39,457 | $19,613 |
| 2023* | $40,254 | $19,368 |
| 2024* | $41,067 | $19,126 |
| 2025* | $41,897 | $18,887 |
