Go through the data set given below and solve the questions based on it.
Following is the area diagram given for the sales value of ABC Limited for the four quarters of the year 2007. ABC Limited has its operations in three zones—North, West and East. Below given data set represents the stacked contribution of these three zones in every quarter of the year 2007.
Data set given above is arranged in bars (in percentage) in the following way—First North zone, then West zone, then East zone of the 1st quarter and in the similar order for the 2nd, 3rd and 4th quarter. How many times there will be an increase in the height of bar with respect to the height of the previous bar?