| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,807 | $22,846 |
| 2016 | $24,164 | $19,565 |
| 2017 | $26,040 | $23,041 |
| 2018 | $26,040 | $23,132 |
| 2019 | $27,804 | $23,395 |
| 2020 | $28,094 | $23,685 |
| 2021* | $28,386 | $23,955 |
| 2022* | $28,681 | $24,228 |
| 2023* | $28,980 | $24,504 |
| 2024* | $29,281 | $24,784 |
| 2025* | $29,586 | $25,066 |
