Chart Date Position Ireland Top 20 2009-12-18   2 2009-12-25   2 UK Singles Top 40 2009-12-20   1 2009-12-27   2 2010-01-03   6 2010-01-10   13 2010-01-17   17 2010-01-24   11 2010-01-31   15 2010-02-07   22 2010-02-14   29 2010-02-21   34 2010-02-28   39 Europe Official Top 100 2009-12-25   22 2010-01-01   22 2010-01-08   80 World Singles Official Top 100 2009-12-25   29 2010-01-01   33 2010-01-08   34 2010-01-15   42 2010-01-22   52 2010-01-29   34 2010-02-05   48 2010-02-12   68 2010-02-19   100 Airplay World Official Top 100 2009-12-25   23 2010-01-01   19 2010-01-08   23 2010-01-15   48 2010-01-22   68 2010-01-29   37 2010-02-05   56 2010-02-12   95 Top40-Charts.com Web Top 100 2009-12-25   18 2010-01-01   29 2010-01-08   38 2010-01-15   52 2010-01-22   97 2010-01-29   92 2010-02-05   64 2010-02-12   67 2010-02-19   66 2010-02-26   64 2010-03-05   64

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