The line graph provides data about HOW the levels of satisfaction with the education system in Australia, Japan, USA, Germany, and Brazil CHANGED over 20 years, starting from 1990.
Overall, it can be seen that the percentage of people who were satisfied with the education system in Brazil, Germany and Japan increased, whereas it decreased in the USA and Australia. Further, satisfaction levels in Japan were consistently higher over the period shown.
Looking at the data sets THAT INCREASED in more detail, it is evident that the levels of satisfaction with the education system in Japan stood at about 56% in 1990. By 2010, it had increased to 69%, which was the highest point on the chart. The percentage of people who were satisfied with the education system in Germany and Brazil showed a similar trend, raising from 33% and 15% to 50% and 36% in 1990 and 2010, respectively. The levels of satisfaction in Brazil, therefore, showed the greatest increase of all the countries over the period shown.
Turning to the remaining data sets THAT DECREASED, it can be seen that the percentage of people who were satisfied with the schooling system in Australia was approximately 50% in 1990. This figure briefly rose to 59%, dropped to 43% in 2005 and then remained almost constant. Similarly, levels of satisfaction in the USA fell from 45% in 1990 to 39% in 2010, which was the greatest decrease of all the categories.