| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,120 | $29,989 |
| 2016 | $52,900 | $31,300 |
| 2017 | $55,200 | $30,247 |
| 2018 | $55,200 | $29,230 |
| 2019 | $59,420 | $29,571 |
| 2020 | $62,090 | $32,241 |
| 2021* | $64,791 | $32,618 |
| 2022* | $67,609 | $33,000 |
| 2023* | $70,550 | $33,386 |
| 2024* | $73,619 | $33,777 |
| 2025* | $76,822 | $34,172 |