Chart description: There is a very bigh jump from 1960 to 1980 which is a scarry thing.

Chart data: Year Number of nuclear power plants Dec 31, 1953 1 Dec 31, 1954 1 Dec 31, 1955 2 Dec 31, 1956 5 Dec 31, 1957 6 Dec 31, 1958 11 Dec 31, 1959 15 Dec 31, 1960 16 Dec 31, 1961 25 Dec 31, 1962 33 Dec 31, 1963 40 Dec 31, 1964 48 Dec 31, 1965 55 Dec 31, 1966 64 Dec 31, 1967 68 Dec 31, 1968 78 Dec 31, 1969 84 Dec 31, 1970 99 Dec 31, 1971 113 Dec 31, 1972 132 Dec 31, 1973 154 Dec 31, 1974 169 Dec 31, 1975 186 Dec 31, 1976 200 Dec 31, 1977 219 Dec 31, 1978 225 Dec 31, 1979 245 Dec 31, 1980 267 Dec 31, 1981 284 Dec 31, 1982 306 Dec 31, 1983 336 Dec 31, 1984 363 Dec 31, 1985 389 Dec 31, 1986 407 Dec 31, 1987 416 Dec 31, 1988 420 Dec 31, 1989 416 Dec 31, 1990 415 Dec 31, 1991 418 Dec 31, 1992 427 Dec 31, 1993 429 Dec 31, 1994 434 Dec 31, 1995 438 Dec 31, 1996 433 Dec 31, 1997 430 Dec 31, 1998 432 Dec 31, 1999 435 Dec 31, 2000 438 Dec 31, 2001 439 Dec 31, 2002 437 Dec 31, 2003 438 Dec 31, 2004 441 Dec 31, 2005 435 Dec 31, 2006 439 Dec 31, 2007 438 Dec 31, 2008 437 Dec 31, 2009 441 Dec 31, 2010 435 Dec 31, 2011 437 Dec 31, 2012 434 Dec 31, 2013 438 Dec 31, 2014 441 Dec 31, 2015 447 Dec 31, 2016 448 Dec 31, 2017 450 Dec 31, 2018 443

Vega-Lite specification:
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