According to statistics from the Taiwan Provincial Institute of Family Planning, births in Taiwan stayed at this natural ratio for 30 years after post-war records began in 1955. But in 1987 the figures began to change, and in 1990 the ratio of boys to girls reached 110: 100--the proportion of boy babies was up by some 5 % over normal.
根據台灣省家庭計畫研究所的統計，台灣在戰後三十年也一直維持此一自然數據，但在一九八七年，數字出現變化，一九九○年男女比達到一百一十比一百，男嬰已多出正常的百分之五。