Chart Date Position Australia Top 20 2009-04-11   35 2009-04-18   23 2009-04-25   18 2009-05-02   11 2009-05-09   6 2009-05-16   4 2009-05-23   3 2009-05-30   4 2009-06-06   5 2009-06-13   7 2009-06-20   6 2009-06-27   12 2009-07-04   28 2009-07-11   30 2009-07-18   25 2009-07-25   26 Canada Top 20 2010-03-21   25 2010-03-28   28 2010-04-04   26 2010-04-11   33 2010-04-18   35 2010-04-25   28 2010-05-02   24 2010-05-06   34 2010-05-13   33 Ireland Top 20 2008-11-15   15 2008-11-22   14 2008-11-29   17 2008-12-06   20 2008-12-27   15 2009-01-03   10 2009-01-10   11 UK Singles Top 40 2008-11-09   23 2008-11-16   33 2008-11-23   37 2008-11-30   35 USA Singles Top 40 2010-05-15   11 2010-05-22   11 2010-05-29   11 2010-06-05   13 2010-06-12   24 2010-06-19   31 2010-06-26   24 2010-07-03   21 2010-07-10   19 2010-07-17   19 2010-07-24   24 2010-07-31   33 Europe Official Top 100 2009-01-24   78 Top40-Charts.com Web Top 100 2009-05-30   89 2009-06-06   97 2010-05-14   25 2010-05-21   17 2010-05-28   14 2010-06-04   22 2010-06-11   49 2010-06-18   53 2010-06-25   51 2010-07-02   42 2010-07-09   42 2010-07-16   45 2010-07-23   57 2010-07-30   65 2010-08-06   72

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