Graph

Great Blue Heron
(Ardea herodias)

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	1.04	0.751	1.45
1971	1.07	0.846	1.38
1972	1.01	0.778	1.29
1973	0.971	0.739	1.23
1974	0.972	0.756	1.23
1975	0.961	0.746	1.23
1976	0.982	0.772	1.28
1977	0.95	0.76	1.19
1978	0.896	0.683	1.13
1979	0.911	0.73	1.16
1980	0.917	0.743	1.14
1981	0.927	0.757	1.16
1982	0.939	0.772	1.21
1983	0.902	0.732	1.18
1984	0.855	0.69	1.08
1985	0.898	0.74	1.15
1986	0.907	0.761	1.18
1987	0.887	0.739	1.14
1988	0.844	0.691	1.05
1989	0.902	0.745	1.2
1990	0.791	0.658	0.974
1991	0.84	0.706	1.06
1992	0.793	0.665	0.961
1993	0.797	0.675	1.02
1994	0.801	0.678	1
1995	0.847	0.712	1.09
1996	0.771	0.655	0.97
1997	0.723	0.6	0.864
1998	0.713	0.591	0.864
1999	0.717	0.599	0.863
2000	0.75	0.619	0.921
2001	0.683	0.567	0.836
2002	0.696	0.581	0.885
2003	0.666	0.553	0.807
2004	0.662	0.55	0.806
2005	0.653	0.544	0.8
2006	0.659	0.548	0.797
2007	0.621	0.506	0.76
2008	0.58	0.448	0.718
2009	0.634	0.528	0.79
2010	0.616	0.507	0.761
2011	0.578	0.464	0.703
2012	0.57	0.448	0.696
2013	0.543	0.424	0.666
2014	0.551	0.433	0.684
2015	0.527	0.389	0.657
2016	0.559	0.448	0.694

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