i tried about 5 times, i still remember my maths score developed this way: 2002: 60, 2005: 70; 2006: 80; 2007:90; 2008:115, and my feeling for my job developed this way: 2002: 120(suppose total is 150), 2003: 125, 2004: 100, 2005: 80, 2006: 75; 2007: 40; 2008: 35