自二战以来，许多国家都试图从低收入国家变成高收入国家，但只有13个国家取得了成功 — — 而它们的官员腐败情况均相对较好。
Since World War II, many countries have attempted the transition from low- to high-income status, but only 13 have succeeded – and all had relatively low levels of official corruption.