Singapore on Tuesday unveiled a staggering S$33 billion worth of fresh stimulus measures to bring the total injections this year to nearly S$100 billion (US$70.4 billion), with the government stressing it will go all out to save as many jobs as possible as the coronavirus-battered economy heads into a tailspin.Economists and market watchers had expected the fourth round of measures to have amounted to no more than S$10 billion, and had viewed today’s announcement as an extension to the over S…