Chart Date Position Australia Top 20 2010-07-12   39 Canada Top 20 2010-06-10   20 2011-05-11   37 Ireland Top 20 2009-12-18   14 2009-12-25   15 2009-12-31   14 2010-01-14   4 2010-01-21   6 2010-01-28   6 2010-02-04   4 2010-02-11   6 2010-02-18   19 Portugal Top 20 2010-04-25   16 UK Singles Top 40 2010-01-17   5 2010-01-24   3 2010-01-31   2 2010-02-07   4 2010-02-14   5 2010-02-21   7 2010-02-28   20 2010-03-07   33 2010-03-14   29 2010-03-21   17 2010-03-28   14 2010-04-04   23 2010-04-11   32 USA Singles Top 40 2009-06-06   4 Europe Official Top 100 2010-01-01   35 2010-01-15   77 2010-01-22   32 2010-01-29   27 2010-02-05   24 2010-02-12   28 2010-02-19   39 2010-02-26   96 Top40-Charts.com Web Top 100 2009-06-06   14 2010-01-29   33 2010-02-05   30 2010-02-12   30 2010-02-19   32 2010-02-26   30 2010-03-05   30 2010-03-12   63 2010-04-02   96 2010-04-09   88

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