Graph

Common Nighthawk
(Chordeiles minor)

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	1.53	0.943	2.57
1971	1.53	0.983	2.53
1972	1.46	0.934	2.39
1973	1.45	0.947	2.22
1974	1.4	0.932	2.22
1975	1.33	0.862	1.99
1976	1.3	0.86	1.93
1977	1.38	0.949	2.18
1978	1.31	0.886	1.98
1979	1.2	0.753	1.76
1980	1.29	0.906	2.05
1981	1.23	0.863	1.87
1982	1.22	0.87	1.9
1983	1.16	0.804	1.71
1984	1.14	0.783	1.71
1985	1.07	0.689	1.51
1986	1.14	0.817	1.81
1987	1.03	0.69	1.44
1988	1.06	0.778	1.61
1989	1.02	0.736	1.5
1990	0.967	0.655	1.35
1991	0.946	0.641	1.33
1992	0.995	0.734	1.56
1993	0.948	0.701	1.4
1994	0.939	0.696	1.49
1995	0.935	0.7	1.43
1996	0.846	0.58	1.21
1997	0.826	0.589	1.19
1998	0.886	0.663	1.4
1999	0.796	0.553	1.13
2000	0.799	0.561	1.17
2001	0.744	0.504	1.07
2002	0.718	0.476	1.04
2003	0.732	0.508	1.09
2004	0.689	0.438	1.01
2005	0.724	0.504	1.12
2006	0.68	0.448	1.02
2007	0.666	0.442	1.02
2008	0.71	0.492	1.19
2009	0.687	0.477	1.19
2010	0.671	0.455	1.13
2011	0.6	0.364	0.949
2012	0.626	0.406	1.06
2013	0.587	0.364	0.967
2014	0.573	0.346	0.929
2015	0.564	0.359	0.945
2016	0.548	0.339	0.938

Notes on numeric data: Ex represents 10 to the power of x; For example 1.2345E-2 is equivalent to 0.012345