| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,212 | $12,247 |
| 2016 | $23,069 | $12,139 |
| 2017 | $23,096 | $14,147 |
| 2018 | $23,096 | $14,970 |
| 2019 | $24,780 | $15,225 |
| 2020 | $25,217 | $15,662 |
| 2021* | $25,661 | $16,111 |
| 2022* | $26,112 | $16,574 |
| 2023* | $26,572 | $17,050 |
| 2024* | $27,040 | $17,539 |
| 2025* | $27,516 | $18,042 |
