| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,821 | $12,996 |
| 2016 | $23,995 | $13,629 |
| 2017 | $24,846 | $15,570 |
| 2018 | $24,846 | $15,293 |
| 2019 | $28,027 | $16,748 |
| 2020 | $29,080 | $17,801 |
| 2021* | $30,112 | $18,921 |
| 2022* | $31,181 | $20,111 |
| 2023* | $32,288 | $21,376 |
| 2024* | $33,434 | $22,720 |
| 2025* | $34,621 | $24,149 |
