4. The labour force data for Eturia (in millions) are shown in the following table: (6 marks) 2018 2019 2020 Population 20 21 22.05 Working-age population 12 12.5 12.8 Labour Force 8.4 9 9.2 Unemployed 0.7 0.8 0.85 CPI (2002 = 100) 108.2 109 110.3 a. What are the (labour force) participation rates in each year? b. What are the unemployment rates in each year? c. Calculate the annual inflation rate (2019 and 2020)