"Nitrogen oxides emissions and emissions intensity of the member countries of the Organisation for Economic Co-operation and Development, 2011 and 2021",,,, ,,,, Country,2011 nitrogen oxides emissions (kilotonnes),2021 nitrogen oxides emissions (kilotonnes),2011 nitrogen oxides emissions intensity (tonnes per million United States dollars of gross domestic product),2021 nitrogen oxides emissions intensity (tonnes per million United States dollars of gross domestic product) United States,13190,6922,0.79,0.34 Australia,2292,2800,2.25,2.19 Canada,1802,1320,1.22,0.76 Japan,1526,1044,0.31,0.2 Türkiye,946,977,0.59,0.37 Germany,1429,963,0.38,0.23 France,1172,751,0.44,0.26 United Kingdom,1170,678,0.46,0.24 Spain,931,618,0.58,0.37 Italy,900,608,0.39,0.27 Poland,823,589,0.9,0.46 Chile,242,259,0.68,0.56 Greece,325,221,1.02,0.74 Netherlands,329,194,0.39,0.21 New Zealand,153,164,1,0.8 Czech Republic,241,159,0.72,0.4 Norway,197,140,0.68,0.41 Belgium,227,139,0.46,0.25 Portugal,185,135,0.59,0.41 Austria,196,121,0.47,0.27 Sweden,163,115,0.37,0.21 Hungary,138,110,0.57,0.35 Ireland,107,99,0.45,0.2 Finland,164,97,0.69,0.38 Denmark,136,89,0.51,0.28 Slovak Republic,81,58,0.54,0.32 Lithuania,56,52,0.76,0.5 Switzerland,79,51,0.16,0.09 Latvia,39,34,0.91,0.59 Slovenia,47,26,0.73,0.33 Estonia,40,22,1.16,0.46 Iceland,22,19,1.51,1.03 Luxembourg,40,13,0.71,0.19 South Korea,1040,n/a,0.6,n/a Colombia,353,n/a,0.66,n/a Israel,158,n/a,0.6,n/a Costa Rica,55,n/a,0.74,n/a Mexico,n/a,n/a,n/a,n/a ,,,, "Note: n/a = not available. Definitions of pollution sources and estimation methods may differ from country to country. Comparisons should be made with caution. Gross domestic product values are in millions of constant United States dollars, constant purchasing power parity, for the base year 2015. The use of purchasing power parity facilitates international comparison of gross domestic product by creating an equivalent purchasing power basis for each country compared.",,,, Source: Organisation for Economic Co-operation and Development (2024) OECD.Stat (stats.oecd.org/Index.aspx?DataSetCode=AIR_EMISSIONS).,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,