| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,759 | $15,793 |
| 2016 | $26,149 | $16,622 |
| 2017 | $27,221 | $18,095 |
| 2018 | $27,221 | $18,097 |
| 2019 | $29,128 | $19,399 |
| 2020 | $29,549 | $19,820 |
| 2021* | $29,995 | $20,861 |
| 2022* | $30,448 | $21,956 |
| 2023* | $30,908 | $23,108 |
| 2024* | $31,375 | $24,322 |
| 2025* | $31,848 | $25,598 |
