The World Bank has a database that contains information such as access to clean fuels and technologies for cooking $(\%$ of the population$),$ high$-$tech exports $($as a percentage of manufactured exports$),$ etc.

Below is a set of data for Yemen.

$\backslash$table$[[$Year$,$Access to Clean Fuels,High Tech exports$],[2010,60\mathrm{.}75,0\mathrm{.}57],[2011,61\mathrm{.}68,0\mathrm{.}67],[2012,62\mathrm{.}29,0\mathrm{.}67],[2013,63\mathrm{.}03,3\mathrm{.}30],[2014,63\mathrm{.}63,1\mathrm{.}45],[2015,64\mathrm{.}28,8\mathrm{.}02]]$

Find Kendall's tau between access and high tech exports Round to two decimal places.