Khmer OS 3.10 2005 570 characters in total, assigned to the following Unicode blocks:
Unicode blocks Percent Total codes Total charaters
Basic Latin
74.22%

74.22%

128 95
Latin-1 Supplement
100%

100%

128 128
Latin Extended-A
18.75%

18.75%

128 24
Latin Extended-B
2.4%

2.4%

208 5
Spacing Modifier Letters
10%

10%

80 8
Combining Diacritical Marks
4.46%

4.46%

112 5
Greek and Coptic
2.08%

2.08%

144 3
Khmer
89.06%

89.06%

128 114
Khmer Symbols
100%

100%

32 32
Latin Extended Additional
44.53%

44.53%

256 114
General Punctuation
18.75%

18.75%

112 21
Currency Symbols
4.17%

4.17%

48 2
Letterlike Symbols
1.25%

1.25%

80 1
Mathematical Operators
3.91%

3.91%

256 10
Geometric Shapes
2.08%

2.08%

96 2
Private Use Area
0.06%

0.06%

6400 4
Alphabetic Presentation Forms
2.5%

2.5%

80 2
Total:
6.77%

6.77%

8416 570