YEAR PROD
1960 0.4544
1961 0.5074
1962 0.5566
1963 0.5950
1964 0.6315
1965 0.7391
1966 0.8742
1967 0.9490
1968 1.0330
1969 1.1096
1970 1.3140
1971 1.6589
1972 2.1115
1973 2.7156
1974 3.0478
1975 2.5441
1976 3.1116
1977 3.3708
1978 3.0350
1979 3.4876
1980 3.6464
1981 3.6445
1982 2.4437
1983 1.9637
1984 1.6735
1985 1.3140
1986 1.9017
1987 1.6790
1988 2.0878
1989 2.0568
1990 2.5933
1991 3.2193
1992 3.3215
1993 3.2704
1994 3.2394
1995 3.2449
1996 3.2978
1997 3.4219
1998 3.5400
1999 3.6200
2000 3.7000
2001 3.7400
2002 3.7600
2003 3.7400
2004 3.7200
2005 3.7200
2006 3.7600
2007 3.7800
2008 3.8200
2009 3.8600
2010 3.9000
2011 3.9200
2012 3.9000
2013 3.8800
2014 3.8600
2015 3.8200
2016 3.8100
2017 3.8000
2018 3.8000
2019 3.7800
2020 3.7600
2021 3.7400
2022 3.7200
2023 3.6800
2024 3.6400
2025 3.5800
2026 3.5400
2027 3.4600
2028 3.3800
2029 3.2600
2030 3.1600
2031 3.0600
2032 2.9200
2033 2.7800
2034 2.6600
2035 2.5400
2036 2.4400
2037 2.3400
2038 2.2400
2039 2.1400