Analytical Paragraph based on line graph

Introduction:

The graph illustrates trends in music buying habits between ______ and ___.

It presents ____ different methods: streaming, downloading and buying CDs.

Body Para 1:

Overall, both downloads and physical sales of music have steadily _____.

The latter has slumped since 2011, while the downturn for the former began in ____.

However, there has been a sharp rise in people streaming music since ____.

Body Para 2:    

In 2011, the majority of music sales were of ____, at 55% of all sales.

In contrast, streaming was not common at all at only ____%.

Also, although people had started to download music, it only represented ___ % of sales.

As sales of CDs began to fall, ____ started to rise.

They rose steadily and downloads overtook physical sales in mid-____.