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begin{document}



begin{figure}[h]
    centering
    subcaptionbox{Socio--political instability and Inflation -- average over time}
        {includegraphics[height=60mm, width=60mm]{spi_inflation_ave_t2.pdf}
    subcaptionbox{Socio--political instability and Inflation -- average over countries}
        {includegraphics[height=60mm, width=60mm]{spi_inflation_ave_i.pdf}
    caption{SPI vs CPI}
    label{fig:fig1}
    end{figure}

end{document}