CJam, 14 12 bytes

Saved 2 bytes thanks to Sp3000

et0=121,f-S*

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Explanation

et0=         e# Push the current year
    121,     e# Push the range 0, 1, ..., 120
        f-   e# For each item in the range, subtract it from the current year
          S* e# Join with spaces

CJam, 14 12 11 bytes

Saved 2 bytes thanks to Sp3000 and 1 byte thanks to Martin Ender

et0=121,f-p

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Explanation

et0=         e# Push the current year
    121,     e# Push the range 0, 1, ..., 120
        f-   e# For each item in the range, subtract it from current year
          p  e# Print the array

CJam, 14 bytes

121{et0=\-}%S*

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Explanation

121{           e# Create the range 0, 1, ..., 120, mapped by some block
    et0=       e# Get the current year
        \      e# Swap the top two elements on the stack
         -     e# Subtract n from current year
          }%   e# (end of block)
            S* e# Join with spaces

CJam, 14 12 bytes

Saved 2 bytes thanks to Sp3000

et0=121,f-S*

Try it online!

Explanation

et0=         e# Push the current year
    121,     e# Push the range 0, 1, ..., 120
        f-   e# For each item in the range, subtract it from the current year
          S* e# Join with spaces