Error bars indicate 95% confidence intervals. A, The incidence of thyroid cancer per 100 000 population in 2007 was 38.3 (95% CI, 37.7-38.8) and in 2016 was 44.1 (95% CI, 43.5-44.7). B, The incidence of postoperative hypoparathyroidism per 100 000 population in 2007 was 2.6 (95% CI, 2.5-2.7) and in 2016 was 3.3 (95% CI, 3.2-3.5). C, The rate of total thyroidectomy per 100 000 population in 2007 was 34.8 (95% CI, 33.7-34.8) and in 2016 was 23.6 (95% CI, 23.2-24.0); the rate of partial thyroidectomy per 100 000 population in 2007 was 4.8 (95% CI, 4.3-5.4) and in 2016 was 22.2 (95% CI, 21.8-22.7).