**Table 2. Decomposition of export market shares growth into composition and country specific performance: main regions of the world, 2009q1–2013q1**

||Export<br>growth|<br>**Export market**<br>**share change**|Geographical<br>Speciali<br>compositio|Sectoral<br>zation<br>n effects|Overall<br>(value)<br>Market sha<br>comp|Price<br>res grow<br>osition e|Volumes<br>th without<br>ffects|
|---|---|---|---|---|---|---|---|
|East Asia & Pacific|7,3|4,5|1,4|-1,5|4,6|1,4|3,2|
|South Asia|10,5|7,7|1,6|0,7|5,4|-0,5|6,0|
|Latin America & Carribean|5,2|2,4|0,4|0,4|1,6|1,0|0,6|
|Middle East & North Africa|1,5|-1,2|0,1|-1,7|0,3|0,2|0,1|
|Sub-Saharian Africa|4,9|2,1|1,5|0,1|0,5|-1,1|1,7|
|Eastern Europe & Central Asia|3,2|0,5|-1,6|-1,6|3,7|1,2|2,5|
|OECD|0,6|-2,1|-0,8|0,6|-1,9|-0,6|-1,2|
|World|2,7|0,0|0,0|0,0|0,0|0,0|0,0|

_Note: figures are averages of the year on year changes in natural logarithms (delta log) in the period 2009q1-2013q1, which preserve the additivity of its components. For relatively small changes the delta log approximates almost exactly the simple percentage growth rate (e.g. ln(1+5%)=0.0488). To obtain the corresponding growth rate of an indicator or of their sum it is sufficient to compute the exponential. Section 3.2 of the paper and footnote 10 provide additional explanations on this point._ Certainly the euro-debt crisis took a toll on those countries and regions whose exports are concentrated towards Europe. This is the case of Eastern Europe and Central Asia: the effect of geographical and sectoral specialization moved from positive to negative territory.

The overall improvement in push factors across the developing world likely reflects sound policy frameworks, strong fundamentals and the substantial efforts in capacity building that many emerging and developing countries have put in place to counter lower exports to advanced countries. However, it is also important to look at the temporal profile. Figure 1 traces year-onyear growth from 2005 through the first quarter of 2013. Its top panel, left-hand side, shows that more modest push performance of the East Asia and Pacific region is concentrated in 2011, but it has picked up again in 2012. The disruption of important components of the Asian value chains due to the Japanese earthquake and tsunami may explain these developments. By contrast the South Asia region has experienced exceptional growth due to push factors over the 2011q22012q2 period, but overall the performance over time has been very variable. This suggests ample scope for optimizing pro-competitive domestic policies in the South Asia region.

Further decomposition of the performance component<sup>15</sup> shows that the deterioration of the export performance of the MENA region – entirely due to developments in volumes of trade – started in 2010q4. This is not surprising, given the significant internal challenges that several economies in the region face in finding stability and growth after the “Arab spring”. Meanwhile OECD countries and the crisis-ridden EU as a group have experienced negative competitiveness since the inception of the euro-debt crisis in 2010.

> 15 Tables not shown here, moreover the full set of indicators will be available through the ECD website.

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