| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2014 | $27,834 | $13,851 |
| 2015 | $28,685 | $14,702 |
| 2016 | $29,684 | $14,473 |
| 2017 | $30,461 | $13,596 |
| 2018 | $30,461 | $11,710 |
| 2019 | $32,038 | $12,310 |
| 2020* | $33,018 | $12,118 |
| 2021* | $34,029 | $11,929 |
| 2022* | $35,070 | $11,743 |
| 2023* | $36,143 | $11,560 |
| 2024* | $37,249 | $11,379 |
