Year

Number of papers/articles

Weight%

2002

1

0.9

2003

2

1.8

2004

10

8.8

2005

13

11.5

2006

16

14.2

2007

20

17.7

2008

11

9.7

2009

16

14.2

2010

18

15.9

2011

6

5.3

Total

113

100