Statistical analysis - grouping data - coursework

I have been given the data below.

2010
3 2 6 2 6 5 22 3 1 10
5 9 7 2 5 1 5 4 9 7
25 19 8 2 5 8 10 16 15 5
7 8 3 6 6 21 6 9 4 5
6 6 22 8 11 23 8 5 9 6
8 7

The data corresponds to prescriptions of a drug for each week of the year, so each of the figure represents a week of the year.

I have made a line graph and a scatter graph to how the data.

My teacher has given it back to me, asking would it be useful to group the data and should another method be considered.

How would I group this data and can anyone reccomend another graph or type of analysis I could use?

thanks in advance