Source: Organization for Economic Co-operation and Development  

Release: Main Economic Indicators  

Units:  Cubic Meters, Not Seasonally Adjusted

Frequency:  Quarterly

Notes:

OECD descriptor ID: ODCNPI02
OECD unit ID: ML
OECD country ID: BEL

All OECD data should be cited as follows: OECD, "Main Economic Indicators - complete database", Main Economic Indicators (database),http://dx.doi.org/10.1787/data-00052-en (Accessed on date)
Copyright, 2016, OECD. Reprinted with permission.