| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,890 | $27,869 |
| 2016 | $53,350 | $29,307 |
| 2017 | $55,010 | $29,687 |
| 2018 | $55,010 | $30,681 |
| 2019 | $58,430 | $32,188 |
| 2020 | $60,152 | $33,910 |
| 2021* | $61,926 | $35,575 |
| 2022* | $63,753 | $37,322 |
| 2023* | $65,634 | $39,154 |
| 2024* | $67,570 | $41,077 |
| 2025* | $69,564 | $43,094 |