I had a look at trends over time (https://www.macrotrends.net/2550/dollar-yen-exchange-rate-hi...) and looked back by decades. In 2013 it was 97.6, in 2003 it was 115.94, 1993 it was 111.08. So roughly around a hundred yen per usd. Before that it was 237.55 in 1983.