| 季度 | 单位：% |
| 含“(E)”其对应值为系统预测，仅供参考。 | |
| 2014-09（E） | 购买后可见 » |
| 2014-06（E） | 购买后可见 » |
| 2014-03（E） | 购买后可见 » |
| 2013-12（E） | 购买后可见 » |
| 2013-09 | 购买后可见 » |
| 2013-06 | 购买后可见 » |
| 2013-03 | 购买后可见 » |
| 2012-12 | 购买后可见 » |
| 2012-09 | 购买后可见 » |
| 2012-06 | 购买后可见 » |
| 2012-03 | 购买后可见 » |
| 2011-12 | 购买后可见 » |
| 2011-09 | 购买后可见 » |
| 2011-06 | 购买后可见 » |
| 2011-03 | 购买后可见 » |
| 2010-12 | 购买后可见 » |
| 2010-09 | 购买后可见 » |
| 2010-06 | 购买后可见 » |
| 2010-03 | 购买后可见 » |
| 2009-12 | 购买后可见 » |
| 2009-09 | 购买后可见 » |
| 2009-06 | 购买后可见 » |
| 2009-03 | 购买后可见 » |
| 2008-12 | 购买后可见 » |
| 2008-09 | 购买后可见 » |
| 2008-06 | 购买后可见 » |
| 2008-03 | 购买后可见 » |
| 2007-12 | 购买后可见 » |
| 2007-09 | 购买后可见 » |
| 2007-06 | 购买后可见 » |
| 2007-03 | 购买后可见 » |
| 2006-12 | 购买后可见 » |
| 2006-09 | 购买后可见 » |
| 2006-06 | 购买后可见 » |
| 2006-03 | 购买后可见 » |
| 2005-12 | 购买后可见 » |
| 2005-09 | 购买后可见 » |
| 2005-06 | 购买后可见 » |
| 2005-03 | 购买后可见 » |
| 2004-12 | 购买后可见 » |
| 2004-09 | 30.10 |
| 2004-06 | 29.90 |
| 2004-03 | 29.40 |
| 2003-12 | 30.20 |
| 2003-09 | 29.90 |
| 2003-06 | 29.50 |
| 2003-03 | 30.50 |
| 2002-12 | 29.80 |
| 2002-09 | 28.90 |
| 2002-06 | 29.20 |
| 2002-03 | 29.00 |
| 2001-12 | 29.10 |
| 2001-09 | 29.60 |
| 2001-06 | 28.90 |
| 2001-03 | 29.40 |
| 2000-12 | 29.80 |
| 2000-09 | 30.10 |
| 2000-06 | 31.50 |
| 2000-03 | 31.30 |
| 1999-12 | 30.10 |
| 1999-09 | 29.50 |
| 1999-06 | 29.60 |
| 1999-03 | 27.30 |
| 1998-12 | 26.40 |
| 1998-09 | 25.70 |
| 1998-06 | 25.40 |
| 1998-03 | 23.40 |
| 1997-12 | 33.80 |
| 1997-09 | 35.50 |
| 1997-06 | 36.20 |
| 1997-03 | 37.20 |
| 1996-12 | 38.70 |
| 1996-09 | 38.70 |
| 1996-06 | 38.00 |
| 1996-03 | 36.80 |
| 1995-12 | 36.90 |
| 1995-09 | 37.20 |
| 1995-06 | 37.40 |
| 1995-03 | 36.80 |
| 1994-12 | 36.70 |
| 1994-09 | 36.60 |
| 1994-06 | 36.40 |
| 1994-03 | 37.30 |
| 1993-12 | 36.00 |
| 1993-09 | 36.20 |
| 1993-06 | 36.30 |
| 1993-03 | 35.30 |
| 1992-12 | 34.90 |
| 1992-09 | 35.70 |
| 1992-06 | 37.80 |
| 1992-03 | 39.90 |
| 1991-12 | 40.10 |
| 1991-09 | 40.40 |
| 1991-06 | 39.60 |
| 1991-03 | 39.90 |
| 1990-12 | 39.30 |
| 1990-09 | 37.30 |
| 1990-06 | 37.10 |
| 1990-03 | 38.00 |
| 1989-12 | 36.00 |
| 1989-09 | 36.40 |
| 1989-06 | 34.70 |
| 1989-03 | 33.80 |
| 1988-12 | 33.00 |
| 1988-09 | 33.60 |
| 1988-06 | 31.80 |
| 1988-03 | 31.10 |
| 1987-12 | 31.70 |
| 1987-09 | 31.70 |
| 1987-06 | 30.40 |
| 1987-03 | 29.10 |
| 1986-12 | 29.80 |
| 1986-09 | 30.40 |
| 1986-06 | 30.50 |
| 1986-03 | 31.30 |
| 1985-12 | 30.30 |
| 1985-09 | 31.10 |
| 1985-06 | 31.90 |
| 1985-03 | 32.20 |
| 1984-12 | 28.20 |
| 1984-09 | 32.70 |
| 1984-06 | 31.80 |
| 1984-03 | 32.00 |
| 1983-12 | 30.60 |
| 1983-09 | 29.50 |
| 1983-06 | 31.00 |
| 1983-03 | 33.90 |
| 1982-12 | 33.50 |
| 1982-09 | 30.80 |
| 1982-06 | 28.60 |
| 1982-03 | 27.30 |
| 1981-12 | 30.00 |
| 1981-09 | 30.00 |
| 1981-06 | 31.00 |
| 1981-03 | 31.30 |
| 1980-12 | 29.60 |
| 1980-09 | 31.80 |
| 1980-06 | 33.90 |
| 1980-03 | 37.30 |
| 1979-12 | 35.50 |
| 1979-09 | 37.90 |
| 1979-06 | 38.20 |
| 1979-03 | 35.30 |
| 1978-12 | 33.00 |
| 1978-09 | 33.80 |
| 1978-06 | 30.70 |
| 1978-03 | 32.90 |
| 1977-12 | 32.50 |
| 1977-09 | 31.20 |
| 1977-06 | 30.30 |
| 1977-03 | 23.00 |
| 1976-12 | 25.20 |
| 1976-09 | 25.50 |
| 1976-06 | 27.30 |
| 1976-03 | 29.00 |
| 1975-12 | 27.20 |
| 1975-09 | 22.80 |
| 1975-06 | 30.10 |
| 1975-03 | 35.70 |
| 1974-12 | 33.80 |
| 1974-09 | 31.70 |
| 1974-06 | 29.30 |
| 1974-03 | 32.60 |
| 1973-12 | 28.00 |
| 1973-09 | 26.60 |
| 1973-06 | 24.60 |
| 1973-03 | 21.30 |
| 1972-12 | 22.90 |
| 1972-09 | 20.10 |
| 1972-06 | 21.00 |
| 1972-03 | 21.00 |
| 1971-12 | 23.90 |
| 1971-09 | 28.60 |
| 1971-06 | 27.60 |
| 1971-03 | 23.80 |
| 1970-12 | 25.60 |
| 1970-09 | 26.60 |
| 1970-06 | 22.40 |
| 1970-03 | 27.10 |
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