How many footnotes did Aruba got on different series code in the year 2002?
Aruba is the name of country where ShortName = 'Aruba'
SELECT COUNT(T2.SeriesCode) FROM Country AS T1 INNER JOIN FootNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.ShortName = 'Aruba' AND T2.Year = 'YR2002'