Think of your four best friends (the friends you feel closest to). In the past year (12 months), how many of your best friends have used electronic cigarettes (e-cigarettes)? *
Year : | State: ■ |
2018 | 80.01 |
2019 | 71.51 |
2020 | 72.84 |
2021 | — |
2022 | — |