| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,036 | $13,613 |
| 2016 | $22,644 | $13,639 |
| 2017 | $23,413 | $15,524 |
| 2018 | $23,413 | $13,086 |
| 2019 | $24,266 | $14,528 |
| 2020 | $22,764 | $13,026 |
| 2021* | $23,392 | $13,051 |
| 2022* | $24,038 | $13,076 |
| 2023* | $24,701 | $13,100 |
| 2024* | $25,383 | $13,125 |
| 2025* | $26,084 | $13,150 |
