The foreign data is from the US TIC report.
The charts are from goldchartsrus.com.
I have added a last chart of Fed Holdings, from the St. Louis Fed data, at the suggestion of my friend Arby.
After the Great Fire of Rome in 64 AD, Nero took a large swath of the destroyed city for himself to build the Domus Aurea (the Golden House). Spanning nearly 100 acres across the Palatine, Esquiline, and Oppian Hills, the complex was famous for its revolving dining rooms, ceilings that showered guests with flower petals, and walls covered in gold leaf. To decorate the entrance he commissioned a massive 115 foot tall bronze figure of himself, modeled after the Colossus of Rhodes.