Progressivity is the Kakwani measure for the respective tax or benefit. The benefit indicators shown in Figure 9 are for all cash transfers taken together. Due to data limitations, it is often difficult to distinguish between individual benefit programmes and, hence, draw more specific conclusions about their relative importance has evolved over time. One can, however, analyse results for different population groups. Both policy reforms and cyclical drivers of labour-market activity impact differently on older workers in particular. It is may therefore be informative to look separately at results for those aged below and above 55.