1968 -999.0 -999.0 992.6 995.9 990.5 987.0 985.3 986.7 987.4 989.4 986.6 993.4 1969 995.5 987.4 990.8 991.3 993.8 993.8 998.6 997.2 989.0 982.6 986.6 990.8 1970 994.5 988.0 995.2 984.3 990.1 997.1 995.4 995.3 991.3 993.7 991.4 992.0 1971 992.7 991.6 988.0 990.9 1003.2 994.6 1000.4 985.2 991.5 992.7 985.6 994.7 1972 995.4 992.1 992.3 989.4 994.9 995.0 991.5 1002.5 990.1 996.2 987.5 993.5 1973 993.4 987.5 985.1 981.8 989.6 998.1 1003.6 988.4 989.6 993.5 990.5 986.1 1974 992.6 991.7 990.0 991.5 996.9 1005.7 990.1 993.9 985.1 988.5 994.2 996.7 1975 994.3 988.3 987.3 991.8 992.8 999.6 997.9 991.6 993.8 985.6 986.8 986.1 1976 995.3 991.3 994.8 988.4 986.1 995.9 983.4 982.8 989.6 993.7 997.7 1001.5 1977 994.8 989.0 990.5 990.2 984.3 993.2 1001.7 993.5 983.7 988.8 988.6 996.1 1978 989.4 991.6 994.0 993.4 1002.7 984.8 1002.4 985.8 995.0 985.4 994.7 988.3 1979 995.5 989.4 995.6 985.4 998.2 990.7 990.0 989.3 993.2 986.7 994.1 997.0 1980 991.2 993.6 992.0 995.1 997.1 986.2 1000.3 996.0 993.8 990.5 986.4 993.8 1981 991.6 983.9 999.8 998.6 993.6 996.1 996.4 990.3 991.4 990.5 982.7 987.9 1982 992.6 987.7 984.0 986.0 992.6 1002.7 990.6 997.4 993.4 986.4 991.5 995.2 1983 994.9 988.5 989.8 999.3 1000.4 994.3 989.7 991.8 993.8 986.1 982.6 987.0 1984 988.5 989.2 996.6 986.0 993.3 998.9 1000.6 991.2 998.4 990.5 984.4 1000.6 1985 995.0 985.3 990.1 989.0 995.7 1007.3 987.5 985.7 986.1 994.8 989.8 982.9 1986 986.5 989.6 991.0 990.0 999.1 983.6 985.9 985.4 988.1 993.4 984.0 985.3 1987 989.2 993.1 984.7 988.8 996.9 992.6 993.7 1000.9 988.5 989.8 983.1 987.6 1988 993.4 991.2 988.5 993.7 999.0 996.1 992.4 1001.1 993.4 1001.7 983.9 984.6 1989 993.1 988.6 989.6 993.4 987.5 985.0 996.5 1000.1 992.3 985.0 985.4 992.5 1990 991.2 992.7 986.3 992.0 1004.5 985.4 994.2 981.6 994.7 978.2 974.3 988.6 1991 988.8 992.4 990.5 993.3 989.1 992.4 993.7 988.9 998.3 986.9 989.5 998.9 1992 991.8 989.0 991.6 995.5 999.6 1002.7 998.2 991.7 989.4 987.2 994.8 996.6 1993 996.5 994.7 989.5 988.4 989.7 991.5 994.0 988.9 985.1 985.6 985.9 985.5 1994 985.8 986.0 993.2 995.2 996.1 996.6 995.4 989.1 981.4 989.5 993.8 988.8 1995 992.5 991.9 983.7 992.2 992.6 989.9 990.8 994.9 988.6 993.7 982.8 986.4 1996 990.9 990.5 986.1 996.5 986.4 992.9 990.8 990.0 996.2 985.8 978.2 988.9 1997 988.3 993.5 990.8 985.6 998.5 1001.8 989.7 985.0 993.1 990.6 995.7 998.1 1998 984.9 993.9 990.2 994.6 999.3 995.6 978.1 985.1 989.4 980.6 983.9 981.8 1999 989.2 984.1 994.7 988.0 992.6 996.4 989.7 989.0 990.8 985.3 987.6 982.4 2000 981.0 995.1 1001.7 988.1 997.8 997.2 1004.5 991.9 1001.5 988.8 994.1 988.4 2001 988.9 987.8 988.1 987.5 998.9 992.1 995.9 982.3 991.0 984.9 980.8 983.0 2002 988.1 986.7 991.7 987.9 993.4 991.2 995.5 999.5 1003.1 989.8 990.1 990.7 2003 993.0 987.2 997.4 994.3 991.7 995.9 997.8 988.7 991.9 985.1 985.2 991.6 2004 987.3 998.1 989.2 992.6 994.4 989.0 991.5 991.5 979.7 990.0 995.5 991.6 2005 987.1 987.5 991.1 984.5 994.8 996.8 998.2 992.5 1000.0 993.7 991.4 995.4 2006 992.6 995.8 981.5 992.3 989.4 998.4 993.9 1000.1 991.5 991.0 982.9 985.5 2007 990.5 988.0 989.6 991.6 999.6 992.0 994.7 988.3 997.9 984.1 990.8 985.3 2008 987.9 989.7 991.4 988.0 993.7 993.6 996.5 990.8 1001.1 985.1 984.6 982.1 2009 985.9 987.0 988.5 990.8 987.1 989.5 992.6 1002.6 990.0 978.6 985.5 989.3 2010 990.7 992.8 988.8 986.1 986.9 987.8 992.2 992.2 991.9 987.5 988.3 981.6 2011 993.0 990.6 992.4 986.7 990.1 992.7 999.9 1004.5 993.9 988.5 989.8 987.7 2012 986.0 985.8 991.1 996.0 993.7 978.3 989.5 989.9 994.7 982.5 986.6 993.8 2013 988.2 989.0 997.3 988.1 987.7 981.4 986.2 991.9 998.3 984.9 980.8 987.2 2014 991.3 990.5 985.1 997.4 986.9 994.8 994.5 996.8 998.2 983.1 980.9 983.5 2015 991.4 988.1 988.6 989.3 990.2 984.1 986.1 985.3 984.2 993.3 984.0 986.6 2016 989.4 986.5 986.6 988.0 1003.1 992.0 997.5 994.2 993.7 994.5 985.7 992.2 2017 988.2 995.5 1003.3 994.8 992.0 988.7 986.1 988.8 980.4 984.6 988.3 980.2 2018 986.3 985.9 983.3 989.7 990.4 994.9 995.0 989.1 992.6 995.3 981.3 981.5 2019 984.9 991.2 992.1 987.2 988.3 993.8 1002.2 995.5 990.7 990.5 988.0 993.6 2020 990.9 994.5 988.9 990.4 998.1 994.2 1001.7 993.8 987.7 985.1 985.3 984.7 2021 987.9 989.2 986.5 988.7 997.0 996.9 993.8 986.0 986.2 981.7 987.7 983.5 2022 988.5 988.2 994.9 989.1 994.6 988.5 990.3 995.0 990.4 980.9 984.2 985.9 2023 985.9 989.4 983.0 989.2 985.5 995.6 995.8 987.5 997.1 982.4 985.1 986.9