Switzerland got its wealth predominantly by shielding money stolen from around the entire world. I'm glad US ended that carnival of happiness to a large degree in 2009.
Switzerland was already the second richest country in Europe in 1913 despite not having a colonial empire to exploit, ample raw resources or the best geographic location.
Whatever the US did in 2009 doesn't seem to have had any long term effect on Swiss GDP. It dipped in 2009, like everyone else, from the "global financial crisis" but recovered the next year.
https://www.bfs.admin.ch/bfs/en/home/statistics/national-eco...