2011

2012

2013

2014

2015

2016

2017

South Africa

32.1

44.65

48.39

44.57

30.15

22.23

24.39

Angola

24.92

33.56

31.97

31.11

16

13.97

20.7

Congo

4.67

4.56

5.71

5.48

2.62

2.33

3.96

DR Congo

3.16

3.53

2.75

2.81

2.63

2.08

3.29

Zambia

2.78

2.69

3.05

3.06

1.79

2.18

3.12

Gabon

0.58

0.62

0.9

1.61

1.1

1.44

2.29

Ghana

0.36

0.64

1.2

1.45

1.3

1.31

1.85

Nigeria

1.58

1.27

1.55

2.66

1.24

0.91

1.62

Equatorial Guinea

1.67

1.82

2.47

3.22

1.17

0.63

1.48

Libya

2.06

6.38

2.04

0.73

0.95

0.35

1.36