ratio Questions

The graph shows the sales of hard drives (in thousand numbers) from five different shops S1, S2, S3, S4, S5 in the years 2016 and 2017. What is the ratio of total sales in all the shops in 2016 to that of the total sales in all the shops in 2017?(Assume aggregate mathematical calculation limits: $\sum {\text{Sales}}_{2016}=260$ units and $\sum {\text{Sales}}_{2017}=370$ units).