Respondents were asked: "How supportive would you be of a national mandate for making research data openly available?" Responses shown as percentage of valid responses per year. Sample sizes: 2016 (n=1,799), 2017 (n=2,249), 2018 (n=1,196), 2019 (n=8,089), 2020 (n=16,909), 2021 (n=20,639), 2022 (n=25,769), 2023 (n=6,091), 2024 (n=4,454), 2025 (n=3,932). Total longitudinal sample N=91,127.