The following table gives the sales of batteries manufactured by a company over the years. Study the table and answer the question that follow.

Number of different types of batteries sold by a company over the years (numbers in thousands)
Year	Types of Batteries
	4AH	7AH	32AH	35AH	55AH
2015	75	142	112	100	105
2016	91	125	100	82	124
2017	95	113	74	104	133
2018	104	90	145	90	75
2019	88	75	140	75	88
2020	102	65	164	45	118
2021	112	87	155	98	142

The total sales of all the seven years is the maximum for which battery ?