Very nice project! That browser tab is staying open for days.
I found a small mistake, the Argentina 2000 list [1] shows "Babasónicos - Ella usó mi cabeza como un revolver", but the actual song by Babasónicos (the one that plays) is titled "Cómo eran las cosas", and "Ella usó mi cabeza como un revolver" is a song by Soda Stereo.
Thanks for catching this! Fixing now
the israeli one has a lot of wrong data as well, "2005 year end top 10" all came out in late 90s-2002