| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,923 | $18,854 |
| 2016 | $30,509 | $19,911 |
| 2017 | $31,082 | $19,788 |
| 2018 | $31,082 | $18,193 |
| 2019 | $32,930 | $18,527 |
| 2020 | $32,492 | $18,089 |
| 2021* | $33,103 | $17,977 |
| 2022* | $33,725 | $17,865 |
| 2023* | $34,359 | $17,755 |
| 2024* | $35,005 | $17,645 |
| 2025* | $35,663 | $17,535 |
