Pew Global Attitudes & Trends Question Database
Question: Now I am going to read you a list of things that may be problems in our country. As I read each one, please tell me if you think it is a very big problem, a moderately big problem, a small problem or not a problem at all...Pollution [623]

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Country Survey Very big problem Moderately big problem Small problem Not a problem at all
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China 
(Non-national
sample)
  Spring 2007 43 43 11 2

Egypt
  Spring 2007 43 39 15 2

India 
(Non-national
sample)
  Spring 2010 67 28 5 0
  Spring 2007 79 16 4 0

Indonesia
  Spring 2007 39 48 11 2

Morocco
  Spring 2007 69 23 4 3

Nigeria 
(Non-national
sample)
  Spring 2007 46 32 16 5

Pakistan
  Spring 2013 71 18 5 1
  Spring 2012 62 22 10 3
  Late Spring 2011 65 23 7 2
  Spring 2011 68 18 7 2
  Spring 2010 63 20 10 2
  Spring 2009 65 21 9 2
  Spring 2007 72 19 3 1

Turkey
  Spring 2007 55 33 8 1

United States
  Spring 2007 44 41 11 2