Suppose the following data describe a nation's population:

$\backslash$table$[[,$Year $1,$Year $2],[$Population$,250$ million,$245$ million$],[$Labor force,$130$ million,$130$ million$],[$Unemployed$,6$ million,$6$ million$]]$

Instructions: Round your responses to two decimal places.

a$.$ What is the unemployment rate in each year?

Year $1$ :

Year $2$:

b$.$ Between Year $1$ and Year $2,$

$($i$)$ the number of unemployed persons