From a fascinating report by Bain and Co. Some numbers:
We discovered that the relationship between the financial economy and the underlying real economy has reached a decisive turning point. The rate of growth of world output of goods and services has seen an extended slowdown over recent decades, while the volume of global financial assets has expanded at a rapid pace. By 2010, global capital had swollen to some $600 trillion, tripling over the past two decades. Today, total financial assets are nearly 10 times the value of the global output of all goods and services.
...Moreover, as financial markets in China, India and other emerging economies continue to develop their own financial sectors, total global capital will expand by half again, to an estimated $900 trillion by 2020 (measured in prevailing 2010 prices and exchange rates).More on financialization here.