| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $30,752 | $23,941 |
| 2016 | $31,456 | $24,486 |
| 2017 | $32,170 | $23,944 |
| 2018 | $32,170 | $24,066 |
| 2019 | $34,524 | $23,354 |
| 2020 | $36,618 | $25,448 |
| 2021* | $37,457 | $25,578 |
| 2022* | $38,314 | $25,708 |
| 2023* | $39,192 | $25,839 |
| 2024* | $40,089 | $25,971 |
| 2025* | $41,007 | $26,104 |
