YEARS("2002-02-19 ";" 2002-02-26 "; 1) returns 0, because there is not a whole year in between, starting at the first day of the year
JIERREN ("2007- 02- 19"; "2007- 02- 26"; 1) jout 0, omdat der net in hiel jier tusken sit, rekkene fan de earste dei fan it jier ôf