Answer:last year
Explanation:
Last year, Columbia County's event hall was used for 27 wedding receptions and 33 anniversary parties. Therefore, the ratio of wedding receptions to anniversary parties last year is 27/33 = 0.82
This year it was used for 32 wedding receptions and 45 anniversary parties. Therefore, the ratio of wedding receptions to anniversary parties this year is 32/45 = 0.71
Therefore last year, the event hall used for a higher ratio of wedding receptions to anniversary parties.