2. In 2020, the pandemics of Coronavirus has caused an unprecedented global economic crisis. For example, in the United States, the Covid-19 has damaged total national output of this country via several channels, including a supply shock, a demand shock and a historical financial shock. The influence of this heath crisis varied by industries and across subsectors within an industry. Suppose, we can use a Cobb-Douglas production function to estimate national output (Y) of the US economy as Yt=AKL1a, where t indicates the year. Here K indicates total capital input and L is total labor, and we have =30% or 0.3. Also, we know the coefficient of A is the total factor of productivity (TFP). As a benchmark, the value of A=2 in 2019. Thus, the production function of real GDP in 2019 can be expressed as Y2019=2KL1. Please use the following information to estimate Real GDP Growth Rate from 2021 to 2022. Note: You can use 2019's GDP as a benchmark and estimate growth rate based on the level of 2019 . Here we assume a has the same value (a=0.3). (1) Suppose in 2021, total labor stock (L) recovered to 98\% of the 2019 level. And capital stock (K), atter several rounds of economic stimulus packages, reached at 108% of the 2019 level. in 2022, labor stock (L) reaches to 103% of the 2019 level and capital stock (R) is 109% of 2019. Given the same total factor productivity as 2019 (factor A=2 ) in 2021 and 2022, how much will be Real GDP Growth Rate from 2021 to 2022