Great_Wall 18Z wind_speed 1987 - - - - - - - - - 19.5 19.5 - 1988 - 17.8 - - 13.5 19.5 - 15.9 - 17.1 14.8 11.5 1989 - 12.3 13.3 20.2 18.1 20.1 20.2 17.6 21.5 22.8 13.1 16.5 1990 14.5 - 17.7 18.9 12.1 15.1 15.6 18.4 17.4 17.1 16.5 - 1991 14.9 - 13.9 - - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - - - - - - - - 22.0 18.1 11.0 1994 15.0 18.1 15.4 15.7 11.9 14.1 - - 16.5 14.7 12.0 - 1995 - 13.6 15.2 - 16.3 13.0 12.7 12.1 9.8 14.2 13.6 - 1996 13.2 14.6 14.1 10.8 13.3 13.1 16.7 13.5 15.2 16.6 15.0 14.1 1997 14.3 13.3 16.6 14.5 13.8 11.9 14.7 14.8 13.3 12.7 11.6 - 1998 10.9 13.0 13.2 20.5 13.1 12.1 13.9 14.1 14.7 15.2 14.7 12.8 1999 11.7 15.4 13.5 15.7 13.9 16.8 16.6 18.6 15.9 17.8 16.0 13.2 2000 14.8 12.4 15.3 19.3 15.9 17.0 14.5 16.5 18.9 16.3 14.1 14.8 2001 13.0 14.2 - 15.9 16.6 17.1 - 21.2 18.8 21.5 19.0 - 2002 - 12.6 10.5 - 11.5 14.6 15.9 15.9 14.3 16.6 12.6 16.5 2003 10.4 15.9 14.5 14.1 12.8 12.5 14.3 - - 19.1 13.2 15.7 2004 13.6 13.6 13.6 - 16.1 15.8 19.2 22.4 20.1 - - 14.4 2005 12.8 18.3 16.7 13.1 11.7 14.9 14.3 15.1 14.4 17.2 15.3 13.5 2006 - - 13.8 13.1 17.8 - 16.0 14.3 14.1 - 13.7 14.9 2007 13.1 11.4 13.0 16.6 - - 12.8 17.9 17.2 15.5 13.1 14.3 2008 15.2 17.0 13.2 15.3 15.2 16.6 16.2 17.1 18.0 - 14.0 18.0 2009 14.0 - - - - - - - - - - -