MOSCOW- Russian gas producer Gazprom said on Monday that its natural gas exports outside of the former Soviet Union had increased 28.3% year on year to 42.9 billion cubic metres from Jan 1 to March 15.

Gazprom also said its natural gas output had risen 8.4% year on year to 112.4 bcm from Jan 1 to March 15.

(Reporting by Oksana Kobzeva; writing by Tom Balmforth; editing by Jason Neely) ((Tom.Balmforth@thomsonreuters.com;))