This is the 1042nd most frequent Japanese word.
前年
"前年" means "the previous year."
前年 is used here to refer to the summer of the previous year.
前年の夏はとても暑かったです。
Last summer was very hot.
前年 indicates the timeframe of the statistics being mentioned.
前年の統計によれば、観光客の数が増加しています。
According to the statistics from the previous year, the number of tourists is increasing.
前年 is used to set a comparative reference to the prior year.