Statistics of level 1 packages for Greek in unstable:
Read http://d-i.debian.org/l10n-stats

Outdated:

Translated:
  zipl-installer/*/debian/po/el.po 1t [Emmanuel Galatoulas]
  s390-netdevice/*/debian/po/el.po 29t [Sotirios Vrachas]
  s390-dasd/*/debian/po/el.po 16t [Sotirios Vrachas]
  pkgsel/*/debian/po/el.po 12t [Vangelis Skarmoutsos]
  partman-xfs/*/debian/po/el.po 2t [Sotirios Vrachas]
  partman-target/*/debian/po/el.po 25t [Vangelis Skarmoutsos]
  partman-prep/*/debian/po/el.po 5t [Sotirios Vrachas]
  partman-partitioning/*/debian/po/el.po 60t [Sotirios Vrachas]
  partman-md/*/debian/po/el.po 58t [Sotirios Vrachas]
  partman-lvm/*/debian/po/el.po 112t [Sotirios Vrachas]
  partman-jfs/*/debian/po/el.po 8t [Sotirios Vrachas]
  partman-ext3/*/debian/po/el.po 14t [Sotirios Vrachas]
  partman-efi/*/debian/po/el.po 11t [Sotirios Vrachas]
  partman-crypto/*/debian/po/el.po 98t [Vangelis Skarmoutsos]
  partman-basicmethods/*/debian/po/el.po 13t [Emmanuel Galatoulas]
  partman-basicfilesystems/*/debian/po/el.po 84t [Sotirios Vrachas]
  partman-base/*/debian/po/el.po 68t [Vangelis Skarmoutsos]
  partman-auto-lvm/*/debian/po/el.po 30t [Sotirios Vrachas]
  partman-auto/*/debian/po/el.po 24t [galaxico]
  nobootloader/*/debian/po/el.po 15t [Emmanuel Galatoulas]
  network-console/*/debian/po/el.po 24t [Sotirios Vrachas]
  netcfg/*/debian/po/el.po 123t [Sotirios Vrachas]
  net-retriever/*/debian/po/el.po 6t [Emmanuel Galatoulas]
  mdcfg/*/debian/po/el.po 43t [Sotirios Vrachas]
  main-menu/*/debian/po/el.po 6t [Sotirios Vrachas]
  lvmcfg/*/debian/po/el.po 80t [Sotirios Vrachas]
  localechooser/*/debian/po/el.po 45t [Sotirios Vrachas]
  lilo-installer/*/debian/po/el.po 27t [Sotirios Vrachas]
  kbd-chooser/*/debian/po/el.po 14t [Emmanuel Galatoulas]
  iso-scan/*/debian/po/el.po 31t [Vangelis Skarmoutsos]
  hw-detect/*/debian/po/el.po 43t [Sotirios Vrachas]
  grub-installer/*/debian/po/el.po 57t [Sotirios Vrachas]
  finish-install/*/debian/po/el.po 9t [Sotirios Vrachas]
  elilo-installer/*/debian/po/el.po 11t [Emmanuel Galatoulas]
  debian-installer-utils/*/debian/po/el.po 14t [Sotirios Vrachas]
  clock-setup/*/debian/po/el.po 15t [Sotirios Vrachas]
  choose-mirror/*/debian/po/el.po 40t [Vangelis Skarmoutsos]
  cdrom-retriever/*/debian/po/el.po 3t [Emmanuel Galatoulas]
  cdrom-detect/*/debian/po/el.po 28t [Sotirios Vrachas]
  cdrom-checker/*/debian/po/el.po 20t [Vangelis Skarmoutsos]
  base-installer/*/debian/po/el.po 94t [Vangelis Skarmoutsos]
  arcboot-installer/*/debian/po/el.po 11t [Sotirios Vrachas]
  anna/*/debian/po/el.po 12t [Sotirios Vrachas]

Missing files:
  aboot-installer/*/debian/po/el.po 0u
  colo-installer/*/debian/po/el.po 0u
  floppy-retriever/*/debian/po/el.po 0u
  mountfloppy/*/debian/po/el.po 0u
  partconf/*/debian/po/el.po 0u
  partitioner/*/debian/po/el.po 0u
  partman-newworld/*/debian/po/el.po 0u
  partman-palo/*/debian/po/el.po 0u
  partman-reiserfs/*/debian/po/el.po 0u
  prep-installer/*/debian/po/el.po 0u
  quik-installer/*/debian/po/el.po 0u
  yaboot-installer/*/debian/po/el.po 0u


Global statistics: 1441t0f0u (100%)     (total strings: 1441=100%)
(From all el.po files)