YEAR PROD
1960 0.3486
1961 0.3614
1962 0.3632
1963 0.4234
1964 0.4581
1965 0.4800
1966 0.5074
1967 0.4490
1968 0.5493
1969 0.5566
1970 0.5712
1971 0.6205
1972 0.5347
1973 0.7373
1974 0.7191
1975 0.8249
1976 0.8815
1977 0.8578
1978 0.9344
1979 1.2684
1980 0.9654
1981 0.3267
1982 0.3687
1983 0.4033
1984 0.4490
1985 0.5165
1986 0.6917
1987 0.8724
1988 1.0129
1989 1.0366
1990 0.7866
1991 0.1022
1992 0.1916
1993 0.1697
1994 0.1898
1995 0.2099
1996 0.2300
1997 0.4417
1998 0.6700
1999 0.8900
2000 1.1200
2001 1.3300
2002 1.5000
2003 1.6300
2004 1.7400
2005 1.8100
2006 1.8600
2007 1.8900
2008 1.9200
2009 1.9400
2010 1.9500
2011 1.9500
2012 1.9400
2013 1.9300
2014 1.9100
2015 1.9000
2016 1.9000
2017 1.8900
2018 1.8900
2019 1.8900
2020 1.9100
2021 1.9100
2022 1.9100
2023 1.9200
2024 1.9100
2025 1.9000
2026 1.8900
2027 1.8700
2028 1.8400
2029 1.8000
2030 1.7500
2031 1.7000
2032 1.6400
2033 1.5800
2034 1.5100
2035 1.4400
2036 1.3700
2037 1.3000
2038 1.2200
2039 1.1500