(Reuters) - Major U.S. stock indexes climbed on Friday and were on track to log solid gains for the week after data showing historic job losses from the coronavirus crisis were slightly fewer than feared. All 11 S&P 500 sectors were positive, led by energy . SPNY and materials . SPLRCM. The U.S. economy lost 20.5 million jobs in April, the Labor Department reported. Economists polled by Reuters had forecast payrolls diving by 22 million, but the decline still marked the steepest plunge since the Great Depression.