| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $13,582 | $9,077 |
| 2016 | $13,412 | $8,969 |
| 2017 | $13,409 | $8,865 |
| 2018 | $13,409 | $8,183 |
| 2019 | $15,630 | $10,565 |
| 2020 | $15,630 | $10,565 |
| 2021* | $15,630 | $10,442 |
| 2022* | $15,630 | $10,321 |
| 2023* | $15,630 | $10,202 |
| 2024* | $15,630 | $10,083 |
| 2025* | $15,630 | $9,966 |