Elaine pressure 1986 - 992.4 990.0 980.1 994.3 991.5 979.5 980.3 976.4 972.7 975.2 981.8 1987 993.2 987.9 985.0 987.6 983.9 987.5 992.5 975.1 988.6 978.2 977.8 985.6 1988 988.5 983.5 985.5 982.3 989.9 996.1 975.6 977.4 - - - - 1989 - - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - - - - - - - - - - 1992 - - - - - - - - - - - - 1993 - 976.1 983.4 979.4 980.1 977.3 969.5 974.6 973.3 972.8 977.5 980.4 1994 983.0 980.4 975.7 983.4 982.8 996.4 985.7 972.4 985.1 976.2 982.4 979.0 1995 978.9 979.0 988.8 980.0 978.6 985.4 998.3 983.7 975.6 978.2 977.3 976.5 1996 984.3 987.9 982.1 976.5 983.6 980.1 979.6 986.5 985.9 970.1 985.0 983.8 1997 990.5 993.4 982.1 987.9 978.0 991.0 982.7 981.3 985.9 982.6 993.3 993.7 1998 988.0 984.3 986.4 978.6 986.6 981.5 983.7 982.6 991.4 985.0 977.4 984.1 1999 986.4 990.8 988.0 985.0 981.8 1003.7 984.7 986.7 987.6 969.3 976.9 977.1 2000 981.9 986.6 987.9 988.7 987.6 990.1 985.6 988.0 992.8 979.8 987.5 999.9 2001 995.2 991.9 987.6 983.5 988.9 987.8 991.8 986.0 982.6 977.5 981.8 982.3 2002 987.2 981.9 994.8 985.5 997.5 997.9 991.8 982.6 990.3 994.9 988.4 984.0 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -