No it is a week by week graph. And from round 4 onwards he steadily declines. For exampleIf it's a line graph it wil be at its peak in 2013 and significantly lower for 2014. Doesn't mean he declined during the year, just that 2014 was rubbish (which it was).
Round 4 2013 he is ranked 49 overall in the comp and Ranked 7 by position
At the end of the season he is ranked around 120 overall and Ranked 21 by position