R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
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Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(5	x1000	210,1946	284,1947	267,1948	248,1949	236,1950	230,1951	228,1952	232,1953	228,1954	228,1955	229,1956	231,1957	234,1958	237,1959	243,1960	239,1961	247,1962	246,1963	250,1964	251,1965	245,1966	240,1967	239,1968	237,1969	248,1970	239,1971	227,1972	214,1973	195,1974	186,1975	178,1976	177,1977	173,1978	176,1979	175,1980	181,1981	179,1982	172,1983	170,1984	174,1985	178,1986	185,1987	187,1988	187,1989	189,1990	198,1991	199,1992	197,1993	196,1994	196,1995	191,1996	190,1997	192,1998	199,1999	200,2000	207,2001	203,2002	202,2003	200,2004	194,2005	188,2006	185,2007	181,2008	185,2009	185,2010	184,2011	180,2012	176,2013	171,2014	175,2015	.)
Error: unexpected symbol in "x <- c(5        x1000"
Execution halted