By Chuck Mikolajczak NEW YORK (Reuters) – The dollar climbed to a fresh 20-year high on Thursday as concerns persisted that central bank actions to drive down high inflation would crimp global economic growth, boosting the currency’s safe-haven appeal. Data from the Labor Department showed weekly initial jobless claims rose to their highest level in three months, although the labor market remains a strength of the U.S. economy. On the inflation front, the producer price index showed a sharp deceleration in April to a 0.5% rise from the 1.6% surge the prior month, thanks in part to a sharp drop…