Just checked the dutch data, it states that LPF won in 2002 by 17%. But that happened in 2003. [https://nl.wikipedia.org/wiki/Lijst_Pim_Fortuyn#Oppositiepar...]
Just as the VVD, a right-wing liberal party is marked as center-left center-right. But if those are marked as center. Same with left wing parties, which show up as 'other'