# **_C. Shared Prosperity Gaps_**

The simulations of the global estimates of shared prosperity gaps between the B40 and the mean and 50 , 60 , 70 , and 80 percentiles, show that the average and median simulated outcomesppYYcc,tt  ppestimated by Equation (8)YYcc,tt ppYYcc,tt ppYYcc,tt  are all positive in magnitude over the period 2016–2030.<sup>35</sup> Figure 5 shows the specific results of the B40–median shared prosperity gap. For instance, the median outcomes generated by using the 1980–2014 base period suggest that at the global level the B40 might be growing 2.9 percentage points faster than the median of the income distribution by 2030. **_ROCs and NROCs._** For this country typology, we distinguish two main patterns in the set of simulations of shared prosperity gaps. The first pattern  based on median outcomes  indicates that the B40 is expected to grow at faster rates, on average, than higher percentiles of the income distribution across both country classifications (ROCs and NROCs) by 2030 and throughout the period 2015–2030 (Figure 5). However, a second pattern shows that the outcomes of shared prosperity measures in both types of economies (ROCs and NROCs) present a more positive standard deviation, or uncertainty, as the difference between percentiles increases.<sup>36</sup> **_LOGCs, MOGCs, and HOGCs._** Our simulated shared prosperity gaps for LOGCs, MOGCs, and HOGCs show uneven patterns. We identify four main results that shape our shared prosperity measures. The first main pattern indicates that, in terms of the median values, the shared prosperity 50 gaps in MOGCs increase as the difference between the B40 and the studied percentiles, , 60 70 80 YYcc,tt , also increases. Note that the shared prosperity gaps in the MOGC simulations pp always have a positive sign. The second major outcome indicates that in terms of the median YYcc,tt YYcc,tt YYcc,tt pp , pp , pp values, the absolute value of the shared prosperity gaps in LOGCs and HOGCs increases as the difference between the B40 and the studied percentiles expands; this pattern means that depending

**_ROCs and NROCs._** For this country typology, we distinguish two main patterns in the set of simulations of shared prosperity gaps. The first pattern  based on median outcomes  indicates that the B40 is expected to grow at faster rates, on average, than higher percentiles of the income distribution across both country classifications (ROCs and NROCs) by 2030 and throughout the period 2015–2030 (Figure 5). However, a second pattern shows that the outcomes of shared prosperity measures in both types of economies (ROCs and NROCs) present a more positive standard deviation, or uncertainty, as the difference between percentiles increases.<sup>36</sup>

> 50 60 70 80 35 Note that the studied shared prosperity gaps are: , , , , and . Additional statistics of these simulated shared prosperity gaps are available upon request. BB40−m ggnn BB40−ppYYcc,tt BB40−ppYYcc,tt BB40−ppYYcc,tt BB40−ppYYcc,tt 36 Based on our selected shared prosperity gaps, this second pattern means that the gap in the growth rate between the DDh,tt DDh,tt DDh,tt DDh,tt DDh,tt B40 and the 80<sup>th</sup> percentile, 80 , has the most uncertainty, whereas the gap that compares the B40 with the median, 50 , has the least amount of uncertainty.  YYcc,tt pp YYcc,tt pp

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