1968 -999.0 -999.0 990.8 994.0 988.7 985.1 983.4 984.8 985.6 987.5 984.8 991.5 1969 993.6 985.6 989.0 989.4 991.9 991.9 996.6 995.3 987.1 980.7 984.7 988.9 1970 992.6 986.2 993.3 982.5 988.2 995.2 993.5 993.4 989.4 991.9 989.6 990.2 1971 990.9 989.8 986.2 989.0 1001.3 992.7 998.5 983.3 989.6 990.8 983.8 992.8 1972 993.6 990.3 990.4 987.5 993.1 993.1 989.6 1000.6 988.2 994.3 985.6 991.7 1973 991.6 985.7 983.3 980.0 987.7 996.2 1001.6 986.5 987.7 991.6 988.6 984.3 1974 990.7 989.9 988.2 989.6 995.0 1003.8 988.2 992.0 983.2 986.6 992.3 994.9 1975 992.4 986.4 985.4 989.9 990.9 997.7 996.0 989.7 991.9 983.8 985.0 984.3 1976 993.5 989.5 993.0 986.5 984.3 994.0 981.5 980.9 987.7 991.8 995.8 999.6 1977 992.9 987.2 988.6 988.3 982.4 991.3 999.8 991.6 981.8 986.9 986.7 994.2 1978 987.5 989.8 992.2 991.5 1000.8 982.9 1000.5 983.9 993.1 983.5 992.8 986.4 1979 993.7 987.6 993.7 983.5 996.4 988.8 988.1 987.4 991.3 984.8 992.2 995.1 1980 989.3 991.8 990.1 993.2 995.2 984.3 998.3 994.1 991.9 988.6 984.5 992.0 1981 989.7 982.0 997.8 996.6 991.7 994.1 994.4 988.3 989.4 988.6 980.7 985.9 1982 990.7 985.7 982.0 984.1 990.6 1000.7 988.6 995.4 991.4 984.4 989.5 993.2 1983 992.9 986.6 987.8 997.3 998.4 992.2 987.7 989.8 991.8 984.1 980.7 985.1 1984 986.6 987.2 994.7 984.1 991.4 996.9 998.6 989.2 996.4 988.6 982.4 998.6 1985 993.0 983.4 988.1 987.1 993.7 1005.3 985.6 983.7 984.1 992.8 987.8 980.9 1986 984.5 987.7 989.0 988.1 997.1 981.6 983.9 983.4 986.1 991.4 982.0 983.4 1987 987.2 991.1 982.8 986.8 994.8 990.6 991.7 998.8 986.5 987.8 981.2 985.7 1988 991.5 989.3 986.6 991.7 997.1 994.1 990.4 999.0 991.4 999.7 982.0 982.7 1989 991.2 986.7 987.7 991.4 985.5 983.1 994.6 998.1 990.3 983.1 983.5 990.6 1990 989.5 991.0 984.6 990.2 1002.7 983.7 992.4 979.8 992.9 976.4 972.6 986.9 1991 987.1 990.6 988.7 991.5 987.3 990.6 991.9 987.1 996.5 985.2 987.8 997.1 1992 990.0 987.3 989.8 993.7 997.8 1000.8 996.3 989.9 987.6 985.4 993.0 994.8 1993 994.7 993.0 987.7 986.6 987.9 989.7 992.2 987.2 983.3 983.8 984.1 983.7 1994 984.0 984.3 991.5 993.4 994.3 994.8 993.6 987.3 979.7 987.7 992.0 987.1 1995 990.7 990.1 982.0 990.4 990.8 988.1 989.0 993.1 986.7 991.9 981.0 984.7 1996 989.2 988.8 984.4 994.7 984.7 991.1 989.0 988.2 994.4 984.0 976.5 987.2 1997 986.6 991.8 989.0 983.8 996.7 1000.0 987.9 983.3 991.3 988.9 994.0 996.4 1998 983.2 992.2 988.5 992.9 997.4 993.7 976.2 983.2 987.5 978.8 982.0 979.9 1999 987.3 982.2 992.8 986.1 990.7 994.4 987.8 987.1 988.9 983.4 985.7 980.5 2000 979.1 993.2 999.8 986.2 995.9 995.3 1002.6 990.0 999.6 986.9 992.2 986.5 2001 987.0 985.9 986.2 985.6 997.0 990.1 994.0 980.4 989.1 983.0 979.0 981.1 2002 986.3 984.8 989.8 986.1 991.4 989.2 993.5 997.5 1001.1 987.9 988.2 988.8 2003 991.1 985.4 995.5 992.4 989.8 995.9 983.1 986.8 990.0 983.2 983.3 989.8 2004 985.4 996.2 987.3 990.7 992.5 987.1 989.6 989.6 977.8 988.1 993.6 989.8 2005 985.2 985.6 989.2 982.6 992.9 994.8 996.2 990.6 998.1 991.9 989.5 993.3 2006 990.7 993.9 979.6 990.4 987.5 996.4 992.0 998.1 989.5 989.1 981.0 983.6 2007 988.6 986.1 987.7 989.7 997.7 990.0 992.7 986.4 996.0 982.2 988.9 983.4 2008 986.1 987.8 989.5 986.1 991.8 991.7 994.6 988.9 999.2 983.2 982.7 980.3 2009 984.1 985.1 986.6 988.9 985.2 987.5 990.6 1000.6 988.0 976.7 983.6 987.4 2010 988.8 990.9 986.9 984.2 985.0 985.9 990.3 990.3 990.0 985.6 986.5 979.7 2011 991.1 988.7 990.5 984.8 988.2 990.7 997.9 1002.5 992.0 986.6 987.9 985.8 2012 984.1 983.9 989.2 994.1 991.7 976.4 987.6 988.0 992.8 980.6 984.7 991.9 2013 986.3 987.1 995.4 986.2 985.7 979.5 984.2 990.0 996.4 983.0 978.9 985.3 2014 989.4 988.6 983.2 995.5 985.0 992.9 992.6 994.9 996.3 981.2 979.0 981.6 2015 989.5 986.2 986.8 987.4 988.3 982.2 984.2 983.4 982.3 991.4 982.2 984.8 2016 987.5 984.7 984.7 986.1 1001.2 990.1 995.5 992.3 991.8 992.6 983.8 990.3 2017 986.3 993.6 1001.4 992.9 990.1 986.8 984.2 986.9 978.5 982.7 986.4 978.4 2018 984.4 984.0 981.4 987.8 988.5 993.0 993.1 987.2 990.7 993.4 979.4 979.6 2019 983.0 989.3 990.2 985.3 988.3 991.8 1000.2 993.6 988.8 988.6 986.1 991.7 2020 989.0 992.6 987.0 988.5 996.2 992.3 999.8 991.8 985.8 983.2 983.4 982.8 2021 986.0 987.4 984.6 986.8 995.0 995.0 991.9 984.1 984.3 979.8 985.8 981.6 2022 986.6 986.3 993.0 987.2 992.7 986.6 988.4 993.1 988.5 979.0 982.4 984.1 2023 984.0 987.5 981.1 987.3 983.6 993.7 993.9 985.6 995.1 980.5 983.2 985.0