Pretty simple really
Year Lg Player Team/(BA, HR, RBI)
1967 AL Carl Yastrzemski BOS .326, 44 HR, 121 RBI
1966 AL Frank Robinson BAL .316, 49 HR, 122 RBI
1956 AL Mickey Mantle NYY .353, 52 HR, 130 RBI
1947 AL Ted Williams BOS .343, 32 HR, 114 RBI
1942 AL Ted Williams BOS .356, 36 HR, 137 RBI
1937 NL Joe Medwick STL .374, 31 HR, 154 RBI
1934 AL Lou Gehrig NYY .363, 49 HR, 165 RBI
1933 AL Jimmie Foxx PHA .356, 48 HR, 163 RBI
1933 NL Chuck Klein PHI .368, 28 HR, 120 RBI
1925 NL Rogers Hornsby STL .403, 39 HR, 143 RBI
1922 NL Rogers Hornsby STL .401, 42 HR, 152 RBI
1909 AL Ty Cobb DET .377, 9 HR, 107 RBI
1901 AL Nap Lajoie PHA .426, 14 HR, 125 RBI
1887 AA Tip O'Neill STL .435, 14 HR, 123 RBI
1878 NL Paul Hines PRO .358, 4 HR, 50 RBI
That is 15 times in 134 years.
Where as Trout has done amazing things, but Rickey Henderson did similar things in a few different seasons during his career.
Trout's season is great. Cabrera's is historic.