What were the 3 biggest percentage of natural gas in 2009?

In 2009, the three largest consumers of natural gas by percentage were the United States, Russia, and Iran. The U.S. led with a significant share due to its extensive industrial and residential use, followed by Russia, which is a major producer and consumer, and Iran, which also has substantial domestic consumption alongside its production capabilities. These countries collectively accounted for a large portion of the global natural gas market.