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Table 9 takes a closer look at the characteristics of exporters who enter, exit, and stay in the market over time. Since we are looking across ranges of years, we list for stayers both the characteristics at the beginning and the end of the range. Compared to stayers, traders who enter and exit the export market tend to be much smaller—both in terms of export value and size of fixed assets—and tend to export few products to fewer markets and have lower return on assets. This is consistent with a Darwinian process of selection. It would be interesting to explore how these performance gaps increase when one conditions only on entrants that survive. It could be the case, for example, that conditional on survival, new entrants are even more productive than incumbents. We leave this for future work.

Table 8. 
Overview of Thai Export Dynamics
Annual Average (%) 2001–2007 2007–2011 2011–2015 2001–2015 
Growth in value 14.9 7.0 1.9 11.4 
Growth in number of products 0.9 0.5 0.2 0.6 
Growth in number of markets 0.0 0.4 1.6 0.6 
Growth in number of traders 8.0 5.2 −0.9 5.2 
Growth in number of PMT relationships 8.0 4.8 0.5 5.7 
Fraction of new traders 33.3 42.2 37.2 37.0 
Fraction of lost traders 26.6 37.0 38.1 32.8 
Value-weighted fraction of new traders 1.9 1.5 1.8 1.7 
Value-weighted fraction of lost traders 0.8 0.8 0.9 0.8 
Fraction of new PMT relationships 61.5 58.3 52.4 58.0 
Fraction of lost PMT relationships 54.7 53.6 51.9 53.6 
Value-weighted fraction of new relationships 14.6 8.4 9.1 11.3 
Value-weighted fraction of lost relationships 10.0 7.3 6.9 8.4 
Annual Average (%) 2001–2007 2007–2011 2011–2015 2001–2015 
Growth in value 14.9 7.0 1.9 11.4 
Growth in number of products 0.9 0.5 0.2 0.6 
Growth in number of markets 0.0 0.4 1.6 0.6 
Growth in number of traders 8.0 5.2 −0.9 5.2 
Growth in number of PMT relationships 8.0 4.8 0.5 5.7 
Fraction of new traders 33.3 42.2 37.2 37.0 
Fraction of lost traders 26.6 37.0 38.1 32.8 
Value-weighted fraction of new traders 1.9 1.5 1.8 1.7 
Value-weighted fraction of lost traders 0.8 0.8 0.9 0.8 
Fraction of new PMT relationships 61.5 58.3 52.4 58.0 
Fraction of lost PMT relationships 54.7 53.6 51.9 53.6 
Value-weighted fraction of new relationships 14.6 8.4 9.1 11.3 
Value-weighted fraction of lost relationships 10.0 7.3 6.9 8.4 

PMT = product–market–trader.

Sources: Thai Customs Department and authors’ calculations.

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