Oil posted the biggest weekly gain since early March as signs emerged of a recovery from the pandemic gaining traction in the US and China. Futures in New York advanced 6.4% this week, despite eking out a small loss on Friday. On the heels of robust economic figures out of the US, data from China showed its gross domestic product climbed 18.3% in the first quarter from a year prior as consumer spending beat forecasts. In March, China's refiners processed about 20% more crude than a year earli ....