| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $30,090 | $25,861 |
| 2016 | $31,660 | $28,081 |
| 2017 | $32,066 | $27,141 |
| 2018 | $32,066 | $24,182 |
| 2019 | $34,031 | $26,858 |
| 2020 | $34,001 | $26,828 |
| 2021* | $34,436 | $26,798 |
| 2022* | $34,877 | $26,769 |
| 2023* | $35,323 | $26,740 |
| 2024* | $35,776 | $26,710 |
| 2025* | $36,233 | $26,681 |
