Silver took a sizable hit, but it has retained value. It still has two aspects to it that are very valuable: industrial and jewelry / fashion. Those are likely to remain for a very long time, providing silver with a value base.
It's gold ratio fell from 16:1 in 19th century to 100:1 in 1930s.
Getting only 15% of your savings is not a good result :)
It's not so bad either, imagine you held the continental dollar or the zimbabwe dollar, or even just the USD since 1975. They did worse than silver.