| 年份 | 单位:亿次 |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2025(E) | 购买后可见 » |
| 2024(E) | 购买后可见 » |
| 2023(E) | 购买后可见 » |
| 2022 | 购买后可见 » |
| 2021 | 购买后可见 » |
| 2020 | 购买后可见 » |
| 2019 | 购买后可见 » |
| 2018 | 购买后可见 » |
| 2017 | 购买后可见 » |
| 2016 | 购买后可见 » |
| 2015 | 购买后可见 » |
| 2014 | 购买后可见 » |
| 2013 | 购买后可见 » |
| 2012 | 9.68 |
| 2011 | 8.66 |
| 2010 | 8.74 |
| 2009 | 8.77 |
| 2008 | 8.27 |
| 2007 | 7.59 |
| 2006 | 7.01 |
| 2005 | 6.79 |
| 2004 | 6.81 |
| 2003 | 6.91 |
| 2002 | 7.10 |
| 2001 | 8.24 |
| 2000 | 8.24 |
| 1999 | 8.38 |
| 1998 | 8.74 |
| 1997 | 9.16 |
| 1996 | 9.44 |
| 1995 | 9.38 |
| 1994 | 9.73 |
| 1993 | 8.98 |
| 1992 | 10.34 |
| 1991 | 10.82 |
| 1990 | 10.65 |
| 1989 | 10.60 |
| 1988 | 11.36 |
| 1987 | 11.30 |
| 1986 | 11.18 |
| 1985 | 11.00 |
| 1984 | 12.65 |
| 1983 | 13.65 |
| 1982 | 14.19 |
| 1981 | 14.38 |
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