This property defines approval of Symbols as Unicode in version 11.0 in 2018
Characters like ՠ,ֈ,ׯ, etc. are listed under 11.0 Age.
684 Characters are present in 11.0 Age starting with the Unicode point U+0560 that represents the character ՠ.
Currently, as per latest version 15.0.0, Unicode supports 26 number of Age. Here are a few examples - 1.1,10.0,11.0, etc.