Years

Appropriate first-line treatment

Keeping first-line treatment over M12

Retention indicator over M12 (%)

2008

43

41

95.34

2009

27

25

92.59

2010

30

29

96.66

2011

36

36

100

2012

25

25

100

2013

39

38

97.43

2014

31

29

93.54

2015

25

23

92

2016

22

22

100