| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,068 | $27,758 |
| 2016 | $52,858 | $27,349 |
| 2017 | $55,168 | $27,104 |
| 2018 | $55,168 | $25,343 |
| 2019 | $59,062 | $25,671 |
| 2020 | $60,543 | $27,152 |
| 2021* | $62,668 | $26,908 |
| 2022* | $64,868 | $26,665 |
| 2023* | $67,145 | $26,425 |
| 2024* | $69,501 | $26,188 |
| 2025* | $71,941 | $25,952 |