The Diesel national average price in May 2022 is $18.743 per liter, so the applicable adjustment percentage effective June 1st, is 30.5% according to the following table:

NATIONAL AVERAGE NEW SCALE OF TEMPORARY ADJUSTMENTS TO THE DISCOUNTS OF THE RATE REGISTERED WITH THE S.C.T.
Diesel price per liter $ M.N.		Discount adjustment in Diesel price increase (%)
From:	To:
	7.215	0.0%
7.216	7.455	0.5%
7.456	7.695	1.0%
7.696	7.935	1.5%
7.936	8.175	2.0%
8.176	8.415	2.5%
8.416	8.655	3.0%
8.656	8.895	3.5%
8.896	9.135	4.0%
9.136	9.375	4.5%
9.376	9.615	5.0%
9.616	9.855	5.5%
9.856	10.095	6.0%
10.096	10.335	6.5%
10.336	10.575	7.0%
10.576	10.815	7.5%
10.816	11.055	8.0%
11.056	11.295	8.5%
11.296	11.535	9.0%
11.536	11.775	9.5%
11.776	12.015	10.0%
12.016	12.255	10.5%
12.256	12.495	11.0%
12.496	12.735	11.5%
12.736	12.975	12.0%
12.976	13.215	12.5%
13.216	13.455	13.0%
13.456	13.695	13.5%
13.696	13.935	14.0%
13.936	14.176	14.5%
14.177	14.321	15.0%
14.322	14.465	15.5%
14.466	14.609	16.0%
14.610	14.753	16.5%
14.754	14.897	17.0%
14.898	15.041	17.5%
15.042	15.185	18.0%
15.186	15.329	18.5%
15.330	15.474	19.0%
15.475	15.618	19.5%
15.619	15.762	20.0%
15.763	15.906	20.5%
15.907	16.050	21.0%
16.051	16.194	21.5%
16.195	16.338	22.0%
16.339	16.482	22.5%
16.483	16.627	23.0%
16.628	16.771	23.5%
16.772	16.915	24.0%
16.916	17.059	24.5%
17.060	17.203	25.0%
17.204	17.347	25.5%
17.348	17.491	26.0%
17.492	17.636	26.5%
17.637	17.780	27.0%
17.781	17.924	27.5%
17.925	18.068	28.0%
18.069	18.212	28.5%
18.213	18.356	29.0%
18.357	18.500	29.5%
18.501	18.644	30.0%
18.645	18.789	30.5%
18.790	18.933	31.0%
18.934	19.077	31.5%