| 2015 | East Asia & Pacific | 1,135.60 million |
| 2015 | Europe & Central Asia | 651.40 million |
| 2015 | Latin America & Caribbean | 344.70 million |
| 2015 | Middle East & North Africa | 185.35 million |
| 2015 | North America | 271.35 million |
| 2015 | South Asia | 412.11 million |
| 2015 | Sub-Saharan Africa | 224.10 million |
| 2014 | East Asia & Pacific | 1,058.22 million |
| 2014 | Europe & Central Asia | 628.36 million |
| 2014 | Latin America & Caribbean | 305.47 million |
| 2014 | Middle East & North Africa | 165.31 million |
| 2014 | North America | 263.78 million |
| 2014 | South Asia | 331.63 million |
| 2014 | Sub-Saharan Africa | 190.74 million |
| 2013 | East Asia & Pacific | 994.10 million |
| 2013 | Europe & Central Asia | 597.32 million |
| 2013 | Latin America & Caribbean | 286.63 million |
| 2013 | Middle East & North Africa | 141.69 million |
| 2013 | North America | 256.11 million |
| 2013 | South Asia | 233.43 million |
| 2013 | Sub-Saharan Africa | 162.37 million |
| 2012 | East Asia & Pacific | 910.47 million |
| 2012 | Europe & Central Asia | 568.23 million |
| 2012 | Latin America & Caribbean | 264.58 million |
| 2012 | Middle East & North Africa | 125.40 million |
| 2012 | North America | 263.52 million |
| 2012 | South Asia | 192.83 million |
| 2012 | Sub-Saharan Africa | 134.86 million |
| 2011 | East Asia & Pacific | 829.14 million |
| 2011 | Europe & Central Asia | 525.52 million |
| 2011 | Latin America & Caribbean | 238.33 million |
| 2011 | Middle East & North Africa | 108.92 million |
| 2011 | North America | 245.90 million |
| 2011 | South Asia | 155.16 million |
| 2011 | Sub-Saharan Africa | 108.74 million |
| 2010 | East Asia & Pacific | 754.63 million |
| 2010 | Europe & Central Asia | 498.93 million |
| 2010 | Latin America & Caribbean | 207.80 million |
| 2010 | Middle East & North Africa | 95.79 million |
| 2010 | North America | 249.12 million |
| 2010 | South Asia | 117.37 million |
| 2010 | Sub-Saharan Africa | 85.42 million |
| 2009 | East Asia & Pacific | 646.37 million |
| 2009 | Europe & Central Asia | 447.80 million |
| 2009 | Latin America & Caribbean | 183.60 million |
| 2009 | Middle East & North Africa | 81.53 million |
| 2009 | North America | 244.85 million |
| 2009 | South Asia | 82.79 million |
| 2009 | Sub-Saharan Africa | 58.85 million |
| 2008 | East Asia & Pacific | 549.42 million |
| 2008 | Europe & Central Asia | 417.66 million |
| 2008 | Latin America & Caribbean | 154.89 million |
| 2008 | Middle East & North Africa | 69.22 million |
| 2008 | North America | 250.58 million |
| 2008 | South Asia | 69.88 million |
| 2008 | Sub-Saharan Africa | 46.46 million |
| 2007 | East Asia & Pacific | 448.71 million |
| 2007 | Europe & Central Asia | 383.64 million |
| 2007 | Latin America & Caribbean | 136.83 million |
| 2007 | Middle East & North Africa | 54.38 million |
| 2007 | North America | 250.05 million |
| 2007 | South Asia | 61.93 million |
| 2007 | Sub-Saharan Africa | 29.54 million |
| 2006 | East Asia & Pacific | 356.62 million |
| 2006 | Europe & Central Asia | 333.38 million |
| 2006 | Latin America & Caribbean | 118.30 million |
| 2006 | Middle East & North Africa | 41.74 million |
| 2006 | North America | 229.30 million |
| 2006 | South Asia | 45.79 million |
| 2006 | Sub-Saharan Africa | 22.92 million |
| 2005 | East Asia & Pacific | 312.47 million |
| 2005 | Europe & Central Asia | 307.43 million |
| 2005 | Latin America & Caribbean | 93.59 million |
| 2005 | Middle East & North Africa | 33.81 million |
| 2005 | North America | 224.04 million |
| 2005 | South Asia | 38.48 million |
| 2005 | Sub-Saharan Africa | 15.59 million |
| 2004 | East Asia & Pacific | 266.39 million |
| 2004 | Europe & Central Asia | 281.55 million |
| 2004 | Latin America & Caribbean | 80.01 million |
| 2004 | Middle East & North Africa | 28.38 million |
| 2004 | North America | 210.75 million |
| 2004 | South Asia | 32.47 million |
| 2004 | Sub-Saharan Africa | 11.18 million |
| 2003 | East Asia & Pacific | 221.34 million |
| 2003 | Europe & Central Asia | 246.05 million |
| 2003 | Latin America & Caribbean | 61.88 million |
| 2003 | Middle East & North Africa | 17.10 million |
| 2003 | North America | 199.35 million |
| 2003 | South Asia | 26.94 million |
| 2003 | Sub-Saharan Africa | 8.02 million |
| 2002 | East Asia & Pacific | 187.23 million |
| 2002 | Europe & Central Asia | 199.51 million |
| 2002 | Latin America & Caribbean | 48.07 million |
| 2002 | Middle East & North Africa | 12.29 million |
| 2002 | North America | 188.42 million |
| 2002 | South Asia | 21.01 million |
| 2002 | Sub-Saharan Africa | 5.84 million |
| 2001 | East Asia & Pacific | 149.70 million |
| 2001 | Europe & Central Asia | 141.67 million |