Before the consumption tax was introduced, the coins were sparsely used in supermarkets etc., however, after the tax was introduced, the supply significantly increased as well as that of five-yen coins, so they began to be minted in high volume especially during the Heisei period.
消費税導入前はスーパーマーケットなどで細々と流通している程度であったが、導入以降は五円硬貨とともに流通量が激増したため、特に平成に入ってから大量に製造されている。