Do you believe in official announcements? The simple truth for the vast majority of Western economies is that there is no sustainable economic growth besides artificial short term effects due to quantitative easing. In fact, real growth is clearly negative if you take inflation into account. For the US see here:
http://www.shadowstats.com/alternate_data/gross-domestic-product-charts
It's well known that governments bend statistical indicators to maintain the public impression of a healthy state of the economy. That is, because a negative impression of economic health carries negative psychological implications that may lead to even worse economic activity. After all, the power of governments depends a lot on the public perception of economic health.
So far, none of the factors that led to the crash 2008 have been resolved. Instead new risks of extreme proportions have been generated by quantitative easing and debt expansion in a desperate attempt to buy time.
ya.ya.yo!