| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,400 | $29,080 |
| 2016 | $40,710 | $34,780 |
| 2017 | $42,100 | $34,111 |
| 2018 | $42,100 | $35,502 |
| 2019 | $40,910 | $38,528 |
| 2020 | $41,338 | $38,956 |
| 2021* | $41,772 | $40,545 |
| 2022* | $42,211 | $42,200 |
| 2023* | $42,654 | $43,921 |
| 2024* | $43,102 | $45,713 |
| 2025* | $43,554 | $47,579 |
