单位:%
                时间范围:1993 - 2024
                            | 序号 | 时间(年) | 数据(%) | 
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | 8.00 | 
| 7 | 2018 | 8.10 | 
| 8 | 2017 | 6.60 | 
| 9 | 2016 | 7.90 | 
| 10 | 2015 | 8.90 | 
| 11 | 2014 | 9.70 | 
| 12 | 2013 | 10.80 | 
| 13 | 2012 | 12.20 | 
| 14 | 2011 | 14.10 | 
| 15 | 2010 | 15.10 | 
| 16 | 2009 | 14.68 | 
| 17 | 2008 | 14.68 | 
| 18 | 2007 | 14.58 | 
| 19 | 2006 | 11.07 | 
| 20 | 2005 | 10.50 | 
| 21 | 2004 | 10.10 | 
| 22 | 2003 | 9.40 | 
| 23 | 2002 | 9.30 | 
| 24 | 2001 | 9.50 | 
| 25 | 2000 | 9.50 | 
| 26 | 1999 | 10.50 | 
| 27 | 1998 | 13.10 | 
| 28 | 1997 | 17.00 | 
| 29 | 1996 | 19.90 | 
| 30 | 1995 | 22.90 | 
| 31 | 1994 | 24.80 | 
| 32 | 1993 | 15.70 | 
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