The graph present the number of math score in High School . between the years 2010 and 2015 As an overall trend It can be seen clearly the number of math score increased gradually until the year 2013 , before it was reduced to ten and maintain a high level in 2014-2015
In 2010 the number of math score to approximately 20 points , increase slight in 2011 to 30 points the number rose steadily to 60 by 2013 , after that fell sharply to 10 in 2014 And between the years 2014 and 2015 , that number rose significant to 90 At this point the number of math score remained stable
To sum up the graph present the number of math score the was increased slowly until the 2013 and the number of math score decreased by 10 went up quickly in 2014-2015 resulting in the following year.