Year per 1,000 male adults 1960 360.005 1961 356.597 1962 353.194 1963 450.8 1964 354.103 1965 350.871 1966 351.695 1967 349.554 1968 353.185 1969 354.397 1970 354.145 1971 357.119 1972 357.897 1973 360.22 1974 363.525 1975 367.587 1976 367.198 1977 367.328 1978 364.093 1979 361.27 1980 358.679 1981 354.974 1982 352.791 1983 363.178 1984 374.874 1985 389.914 1986 406.059 1987 425.201 1988 439.02 1989 457.086 1990 510.083 1991 552.027 1992 594.41 1993 631.447 1994 999.942 1995 617.016 1996 586.261 1997 596.525 1998 585.864 1999 504.692 2000 462.487 2001 441.741 2002 413.441 2003 377.789 2004 354.734 2005 338.011 2006 330.864 2007 320.689 2008 314.474 2009 309.222 2010 311.182 2011 310.016 2012 301.29 2013 291.767 2014 292.108 2015 284.929 2016 285.275 2017 282.546 2018 273.304 2019 272.136 2020 270.464 2021 276.693 2022 263.376