Percent Jewish - Country rankings:
The average for 2013 was 4.3 percent.The highest value was in Israel: 76.2 percent and the lowest value was in Hungary: 0.2 percent. Below is a chart for all countries where data are available for: Percent Jewish.
People practicing Judaism as percent of the population, 2013
(percent, Source: The Cline Center for Democracy, TheGlobalEconomy.com)