The phrase "rollercoaster year" means that the year has been filled with many ups and downs or sudden changes, just like a rollercoaster ride. Full definition
Instead the team has opted to go with Kiwi Brendon Hartley, whose rollercoaster year continues - he's won Le Mans, then lost his job thanks to Porsche quitting LMP1, and now he's an F1 driver! (wtf1.com)
These questions come as EM stocks have had a rollercoaster year, with valuations beaten up by concerns about China's economy, slowing global growth and lower commodity prices, just to name a few of the headwinds facing developing markets. (blackrockblog.com)
For a player in the seemingly staid insurance sector, QBE has had a rollercoaster year. (afr.com)