Year Payments to preclinical trials (%)a, $ Payments to registered clinical trials Payments to registered clinical trials
Payment amounts (%)a, $ Number of clinical trials, n
2014 4,236,601 (2.3) 26,102,132 (14.0) 114
2015 5,608,733 (3.2) 24,139,114 (13.6) 117
2016 4,799,019 (2.3) 30,818,695 (14.6) 135
2017 2,029,356 (1.0) 28,874,960 (14.1) 160
2018 1,992,856 (1.2) 45,295,389 (27.5) 135
2019 5,385,369 (2.6) 71,808,850 (34.4) 143
2020 3,026,593 (1.6) 68,622,026 (36.9) 121
2021 6,097,548 (4.0) 69,345,436 (45.6) 155
Overall 33,176,075 (2.2) 365,006,603 (24.5) 505