Me too
Sadly I bought a 1996 model that was 4 yrs old at the time. First trailer, naive and floor was rotton as were the bottom of the sides. IW dealer quoted about £600 to renew so I ended up trading it in and getting a new one!.
IW told me my year had been recalled but my trailer hadnt gone back
Mine is about 15 years old so in the right ballpark. I bought it with an aluminium floor 6 or 7 years ago as the IW dealer I bought from had replaced it. Still has wooden walls though.
I've been pleased with mine, it was supposed to be a temporary stop gap between lorries but the gap is longer than intended! Mine has a new wooden floor, but I would get it replaced with ali if I was keeping it. The wooden sides mean it's repairable by your average handyman. And they seem to hold their resale value.