Time series of total nitrogen depositions to
  main regions of the OSPAR maritime area in t N/year

 Year/Region         1         2         3         4         5
   1990           437608    547170    130163    176877    594354
   1995           374379    498740    147339    170371    563211
   1996           498958    582036    185447    200649    691577
   1997           386331    524114    159479    171259    627625
   1998           297882    544665    132683    169475    495803
   1999           337149    501511    120601    167275    483830
   2000           328528    571648    119355    153513    460124
   2001           310012    502241    129321    168574    518475
   2002           369103    494337    139549    174775    500717
   2003           433169    468578    152767    178984    541897