Please help analyze which advertisements are effective with which customer groups and why from information below? Gathering information $-$ Analytical procedure

$\backslash$table$[[$Areas$,1990,1991,1992,1993,1994],[$Trends$],[$Total expenses,$$2$M$,$$$2$M$,$$$1\mathrm{.}5$M$,$$$2\mathrm{.}5$M$,$$$3\mathrm{.}5$M$],[$Percentage of total company expenses,$2\%,2\mathrm{.}5\%,2\mathrm{.}0\%,2\mathrm{.}6\%,3\%],[$Total revenue,$$100$M$,$$$150$M$,$$$150$M$,$$$160$M$,$$$200$M$],[$Information Source: financial statements$],[$Productivity$],[$Revenue$/$dollar advertising cost,$$50,$$$75,$$$100,$$$64,$$$67],[$Information source: financial statements$],[$Media expenditures$],[$Trade journals,$$0\mathrm{.}5M,$$$0\mathrm{.}2$M$,$$$0\mathrm{.}1$M$,$$$0\mathrm{.}5M,$$$0\mathrm{.}5M$