AutoIt - 66 bytes
$_=@YEAR-2000 ClipPut(($_-Round(($_-6)/4))/10+6&' 3'&($_-10)*3+10) The rounding eats bytes. Output for this year:
7.3 325 1 of 7
user42643
$_=@YEAR-2000 ClipPut(($_-Round(($_-6)/4))/10+6&' 3'&($_-10)*3+10) The rounding eats bytes. Output for this year:
7.3 325