news.yahoo.co.jp ＊＊＊＊＊＊＊＊＊＊＊＊＊ W。出典先。世界経済のネタ帳 https://ecodb.net/exec/trans_exchange.php?type=EXCHANGE&b=JPY&c1=USD&ym=M&s=&e= 年 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 13.50 10.38 6.16 3.16 4.37 3.53 1.…