, I - , . .
- . 1500 16 . . 20 - 1989 . 1994, 1999 2003 .
-, 20 . . . 20 .
1989 . - 72%. 1994 34- . I (41%). 10 - 1994 2003 . . .
- . . , - - . - , I. , .
, , , . , , , .
, . 2003 21%, 2008 - 34%.
1989 1994 1999 2003 2008
25% 23% 42% 39% 47%
I 38% 41% 45% 43% 37%
12% 20% 35% 40% 36%
72% 34% 42% 43% 34%
21% 32%
15% 8% 26% 33% 25%
19% 14% 20% 22% 23%
20% 13% 18% 17% 17%
17% 18% 18% 16% 16%
13% 8% 12% 12% 14%