Selected comparative financial statements of Haroun Company follow. Required: $1.$ Complete the below table to calculate the trend percents for all components of both statements using $2015$ as the base year. $2.$ Refer to the results from part $1.($a$)$ Did sales grow steadily over this period? $($b$)$ Did net income as a percent of sales grow over the past four years? $($c$)$ Did inventory increase over this period?