| 序号 | 时间（年） | 单位：% |
|---|---|---|
| 注：时间后面标注“E”其对应的值为系统根据历史数据预测所得，仅供参考。 | ||
| 1 | 2009 | 62.27 |
| 2 | 2008 | 59.29 |
| 3 | 2007 | 66.40 |
| 4 | 2006 | 61.97 |
| 5 | 2005 | 65.59 |
| 6 | 2004 | 61.25 |
| 7 | 2003 | 70.60 |
| 8 | 2002 | 64.11 |
| 9 | 2001 | 62.47 |
| 10 | 2000 | 65.47 |
| 11 | 1999 | 65.96 |
| 12 | 1998 | 60.61 |
| 13 | 1997 | 58.52 |
| 14 | 1996 | 57.84 |
| 15 | 1994 | 56.08 |
| 16 | 1993 | 52.78 |
| 17 | 1992 | 54.74 |
| 18 | 1991 | 48.23 |
| 19 | 1990 | 54.09 |
| 20 | 1989 | 64.41 |
| 21 | 1988 | 74.09 |
| 22 | 1987 | 79.16 |
| 23 | 1986 | 72.16 |
| 24 | 1985 | 66.15 |
| 25 | 1984 | 69.42 |
| 26 | 1983 | 66.15 |
| 27 | 1982 | 57.25 |
| 28 | 1981 | 57.75 |
| 29 | 1980 | 59.65 |
| 30 | 1979 | 63.78 |
| 31 | 1978 | 67.19 |
| 32 | 1977 | 63.42 |
| 33 | 1976 | 65.45 |
图表颜色：
图表起止时间： - （拖动下面左右滑块改变图表起始时间）
