Table 3.

Moran's index of water use efficiency in SSA.

Year	Moran's I	Z (I)	p-value
2007	0.742	21.037	0.000∗∗∗
2008	0.965	17.003	0.000∗∗∗
2009	0.977	13.007	0.000∗∗∗
2010	0.953	10.305	0.000∗∗∗
2011	0.601	12.734	0.003∗∗∗
2012	0.965	7.932	0.000∗∗∗
2013	0.937	13.304	0.000∗∗∗
2014	0.904	20.312	0.000∗∗∗
2015	0.851	33.757	0.000 ∗∗∗
2016	0.827	17.604	0.000∗∗∗
2017	0.913	18.268	0.000∗∗∗
2018	0.911	25.004	0.000∗∗∗

Note: ∗∗∗ indicates a significant level of 1%.