Percentage increase in export = (previous year export - current year export) x 100/current year export.
In 2003.
Percentage increase in export = (45 - 40) x 100 /40 = 12.5%
In 2004. there is decrease in export over the previous year.
In 2005.
Percentage increase in export = (40 - 35) x 100/35 = 14.29%
In 2008.
Percentage increase in export = (55 - 50) x 100/ 50 = 10%
The answer will be year 2005 and 14.2. The correct option is (c).