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92 | Sub-Saharan Africa (SSA) Report

Table 4-3. Use of roots and tubers in 1993 and projected to 2020, baseline scenario.

Region
Cassava
Potato
Sweet potato
and yam
All roots and
tubers
(million tonnes)
1993
2020
1993
2020
1993
2020
1993
2020
Sub-Saharan
Africa
87.7
168.1
2.8
6.3
36.0
74.5
126.4
248.9
Developing
countries
152.0
254.6
95.2
163.2
155.5
217.3
402.7
635.1
Developed
countries
20.7
20.5
190.1
206.2
2.5
2.7
213.3
229.4
World
172.7
275.1
285.3
369.4
158.0
220.0
616.0
864.5

Source: IMPACT Simulations; Scott et al., 2000.
Table 4-4. Projected annual growth rates for roots and tubers, 1993-2020, baseline scenario.

Region
Cassava
Potato
Sweet potato and yam
All roots and tubers
Food
Feed
Fiber
Food
Feed
Fiber
Food
Feed
Fiber
Food
Feed
Fiber
(% per year)
Sub-Saharan
Africa
2.49
1.53
2.44
3.10
1.81
3.10
2.74
1.89
2.73
2.55
1.56
2.54
Developing
countries
1.99
1.62
1.93
2.33
0.37
2.02
0.44
1.81
1.25
1.62
1.57
1.70
Developed
countries
-0.50
0.01
-0.04
0.37
0.22
0.30
0.28
0.61
0.33
0.36
0.15
0.27
World
1.98
0.95
1.74
1.20
0.26
0.96
0.43
1.80
1.23
1.30
1.07
1.26

Source: IMPACT Simulations; Scott et al., 2000.

SSA_4_4-7

Figure 4-7. World demand for meat, 1974, 1997, and 2020. Source: Rosegrant et al., 2001 based on IFPRI IMPACT
projections.


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