The table shows the annual expenditure of five families during the last 5 years. (In Rs. Thousands)

Year → Family ↓	2017	2018	2019	2020	2021
F1	35	50	55	60	45
F2	45	35	60	55	40
F3	53	40	45	65	50
F4	40	30	35	50	45
F5	35	45	55	50	45

Which family had the highest expense throughout the years?