This is in the form of a graph showing the annual inflation rate in each month. To read out the inflation rate for any given year, say 1990, move the horizontal line over to December in that year and that will give you the inflation rate for January-December in that year. Alternatively, under the graph it does give you the option to down annual rates into a XL spreadsheet.
The questions which your project should answer
Describe how the unemployment rate and the inflation rate have changed over the period in the three countries. Use a line graph of both time series to help explain your observations. Note, for Germany and the RoI you need to look up AMECO on that web address and then under