analysis of www.rightmove.co.uk's search volume

Britain enjoys the highest search volume across the world,we can see from the chart,in January,the search volume was low,just 11%,and decreased slowly,until December 2004,it started to grow slowly,during the period,it had several fluctuations,and always decreased to a bottom in December every year,but it had increased much as a whole,and eventually reached its peak in April 2013,incread by 89% than in the first period.
      England is the city enjoys the highest search volume,the second is Welsh with a volume of 56%,Scotland of 49%,Northern Island of 11%.