| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,749 | $13,410 |
| 2016 | $22,372 | $14,515 |
| 2017 | $23,284 | $15,926 |
| 2018 | $23,284 | $15,107 |
| 2019 | $20,010 | $11,981 |
| 2020 | $20,878 | $12,849 |
| 2021* | $21,475 | $13,779 |
| 2022* | $22,089 | $14,777 |
| 2023* | $22,721 | $15,847 |
| 2024* | $23,371 | $16,994 |
| 2025* | $24,039 | $18,224 |