Data::Dumper was first released with perl 5.005
  5.005      2.09
  5.00503    2.101
  5.00504    2.101
  5.006      2.101
  5.006001   2.102
  5.006002   2.121
  5.007003   2.12
  5.008      2.12
  5.008001   2.121
  5.008002   2.121
  5.008003   2.121
  5.008004   2.121
  5.008005   2.121
  5.008006   2.121_02
  5.008007   2.121_04
  5.008008   2.121_08
  5.008009   2.121_17
  5.009      2.121
  5.009001   2.121
  5.009002   2.121_04
  5.009003   2.121_08
  5.009004   2.121_08
  5.009005   2.121_13
  5.01       2.121_14
  5.010000   2.121_14