| 序号 | 时间 (年) |
数据 (公里/百平方公里) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 213.91 |
| 8 | 2017 | 213.92 |
| 9 | 2016 | 214.08 |
| 10 | 2015 | 209.53 |
| 11 | 2014 | 208.72 |
| 12 | 2013 | 202.94 |
| 13 | 2012 | 201.98 |
| 14 | 2011 | 196.24 |
| 15 | 2010 | 192.74 |
| 16 | 2009 | 191.21 |
| 17 | 2008 | 162.31 |
| 18 | 2007 | 159.19 |
| 19 | 2006 | 157.85 |
| 20 | 2005 | 116.47 |
| 21 | 2004 | 111.93 |
| 22 | 2003 | 109.05 |
| 23 | 2002 | 107.14 |
| 24 | 2001 | 104.26 |
| 25 | 2000 | 102.15 |
| 26 | 1999 | 100.06 |
| 27 | 1998 | 98.52 |
| 28 | 1997 | 94.50 |
| 29 | 1996 | 94.50 |
| 30 | 1995 | 94.40 |
| 31 | 1994 | 92.98 |
| 32 | 1993 | 91.68 |
| 33 | 1992 | 83.37 |
| 34 | 1991 | 71.36 |
| 35 | 1990 | 53.75 |
| 36 | 1989 | 53.75 |
| 37 | 1988 | 52.82 |
| 38 | 1987 | 51.16 |
| 39 | 1986 | 50.63 |
| 40 | 1985 | 50.30 |
| 41 | 1984 | 50.30 |
| 42 | 1983 | 49.70 |
| 43 | 1982 | 49.70 |
| 44 | 1981 | 49.70 |
| 45 | 1980 | 49.70 |
| 46 | 1979 | 49.70 |
| 47 | 1978 | 51.08 |
