| 年月 | 单位：万台 |
| 2008-12 | 7.42 |
| 2008-11 | 22.38 |
| 2008-10 | 25.59 |
| 2008-09 | 30.80 |
| 2008-08 | 23.44 |
| 2008-07 | 13.96 |
| 2008-06 | 18.65 |
| 2008-05 | 20.45 |
| 2008-04 | 25.52 |
| 2008-03 | 16.44 |
| 2008-02 | 9.72 |
| 2008-01 | 6.81 |
| 2007-12 | 11.75 |
| 2007-11 | 16.20 |
| 2007-10 | 20.90 |
| 2007-09 | 27.66 |
| 2007-08 | 16.45 |
| 2007-07 | 19.75 |
| 2007-06 | 18.73 |
| 2007-05 | 29.01 |
| 2007-04 | 20.46 |
| 2007-03 | 18.10 |
| 2007-02 | 3.80 |
| 2007-01 | 3.20 |
| 2006-12 | 110.68 |
| 2006-11 | 113.37 |
| 2006-10 | 124.10 |
| 2006-09 | 115.59 |
| 2006-08 | 90.20 |
| 2006-07 | 113.76 |
| 2006-06 | 108.17 |
| 2006-05 | 112.09 |
| 2006-04 | 99.93 |
| 2006-03 | 55.07 |
| 2006-02 | 49.55 |
| 2006-01 | 64.52 |
| 2005-12 | 55.40 |
| 2005-11 | 117.30 |
| 2005-10 | 128.70 |
| 2005-09 | 120.56 |
| 2005-08 | 87.49 |
| 2005-07 | 92.78 |
| 2005-06 | 73.86 |
| 2005-05 | 94.26 |
| 2005-04 | 105.68 |
| 2005-03 | 132.91 |
| 2005-02 | 124.46 |
| 2005-01 | 141.03 |
| 2004-12 | 167.95 |
| 2004-11 | 178.69 |
| 2004-10 | 207.19 |
| 2004-09 | 227.59 |
| 2004-08 | 230.71 |
| 2004-07 | 223.60 |
| 2004-06 | 230.76 |
| 2004-05 | 219.82 |
| 2004-04 | 207.89 |
| 2004-03 | 163.76 |
| 2004-02 | 248.09 |
| 2004-01 | 151.42 |
| 2003-12 | 159.61 |
| 2003-11 | 169.26 |
| 2003-10 | 167.77 |
| 2003-09 | 152.10 |
| 2003-08 | 150.67 |
| 2003-07 | 163.66 |
| 2003-06 | 150.82 |
| 2003-05 | 166.94 |
| 2003-04 | 132.58 |
| 2003-03 | 132.07 |
| 2003-02 | 174.27 |
| 2003-01 | 122.24 |
| 2002-12 | 107.89 |
| 2002-11 | 169.48 |
| 2002-10 | 150.77 |
| 2002-09 | 166.39 |
| 2002-08 | 161.58 |
| 2002-07 | 143.58 |
| 2002-06 | 140.61 |
| 2002-05 | 160.81 |
| 2002-04 | 187.02 |
| 2002-03 | 26.60 |
| 2002-02 | 38.67 |
| 2002-01 | 48.94 |
| 2001-12 | 86.00 |
| 2001-11 | 80.62 |
| 2001-10 | 111.04 |
| 2001-09 | 103.84 |
| 2001-08 | 148.32 |
| 2001-07 | 130.25 |
| 2001-06 | 106.05 |
| 2001-05 | 89.26 |
| 2001-04 | 86.58 |
| 2001-03 | 72.85 |
| 2001-02 | 49.60 |
| 2001-01 | 48.80 |
| 2000-12 | 69.26 |
| 2000-11 | 83.72 |
| 2000-10 | 92.76 |
| 2000-09 | 90.56 |
| 2000-08 | 82.02 |
| 2000-07 | 79.00 |
| 2000-06 | 67.58 |
| 2000-05 | 57.75 |
| 2000-04 | 61.81 |
| 1999-12 | 54.73 |
| 1999-11 | 58.69 |
| 1999-10 | 56.39 |
| 1999-09 | 58.10 |
| 1999-08 | 54.31 |
| 1999-07 | 54.61 |
| 1999-06 | 54.32 |
| 1999-05 | 40.67 |
| 1999-04 | 43.12 |
| 1999-03 | 40.43 |
| 1999-02 | 26.06 |
| 1999-01 | 29.64 |
| 1998-06 | 35.53 |
| 1998-05 | 31.09 |
| 1998-04 | 38.56 |
| 1998-03 | 51.60 |
| 1998-02 | 36.73 |
| 1998-01 | 23.88 |
| 1997-12 | 23.42 |
| 1997-11 | 30.92 |
| 1997-10 | 28.71 |
| 1997-09 | 33.84 |
| 1997-08 | 25.45 |
| 1997-07 | 18.03 |
| 1997-06 | 26.08 |
| 1997-05 | 43.52 |
| 1997-04 | 23.98 |
| 1997-03 | 17.51 |
| 1997-02 | 11.19 |
| 1997-01 | 16.85 |
| 1995-12 | 22.41 |
| 1995-11 | 15.80 |
| 1995-10 | 13.00 |
| 1995-09 | 15.85 |
| 1995-08 | 9.75 |
| 1995-07 | 6.65 |
| 1995-06 | 10.01 |
| 1995-05 | 10.23 |
| 1995-04 | 15.61 |
| 1995-03 | 10.71 |
| 1995-02 | 6.94 |
| 1995-01 | 13.94 |
| 1993-12 | 27.00 |
| 1993-11 | 13.00 |
| 1993-10 | 10.00 |
| 1993-09 | 7.00 |
| 1993-08 | 4.00 |
| 1993-07 | 5.00 |
| 1993-06 | 8.00 |
| 1993-05 | 8.00 |
| 1993-04 | 10.00 |
| 1993-03 | 5.00 |
| 1993-02 | 8.00 |
| 1993-01 | 5.00 |
| 1992-12 | 8.00 |
| 1992-11 | 7.00 |
| 1992-10 | 6.00 |
| 1992-09 | 5.00 |
| 1992-08 | 4.00 |
| 1992-07 | 3.00 |
| 1992-06 | 4.00 |
| 1992-05 | 4.00 |
| 1992-04 | 4.00 |
| 1992-03 | 4.00 |
| 1992-02 | 3.49 |
| 1992-01 | 4.19 |
| 1991-12 | 3.43 |
| 1991-11 | 3.56 |
| 1991-10 | 2.96 |
| 1991-09 | 3.05 |
| 1991-08 | 2.44 |
| 1991-07 | 1.52 |
| 1991-06 | 1.34 |
| 1991-05 | 0.91 |
| 1991-04 | 0.90 |
| 1991-03 | 0.78 |
| 1991-02 | 0.46 |
| 1991-01 | 0.87 |
| 1990-12 | 0.67 |
| 1990-11 | 0.39 |
| 1990-10 | 0.02 |
| 1990-09 | 0.16 |
| 1990-08 | 0.01 |
| 1990-07 | 0.04 |
| 1990-06 | 0.01 |
| 1990-05 | 0.03 |
| 1990-04 | 0.18 |
| 1990-03 | 0.76 |
| 1990-02 | 0.92 |
| 1990-01 | 0.28 |
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