Kendall tau rank correlations for all pairs of data series
pair	tau	p-value
tau( Omzet , Productie )	0.544833674326312	3.84912102191493e-11
tau( Omzet , HICP )	0.314370622435448	0.000169062332117775
tau( Productie , HICP )	0.0907028867784266	0.278215958540113