Graph

American Bittern
(Botaurus lentiginosus)

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	0.754	0.537	1.07
1971	0.761	0.554	1.09
1972	0.748	0.546	1.06
1973	0.727	0.536	1.02
1974	0.718	0.531	1.01
1975	0.695	0.513	0.97
1976	0.677	0.499	0.94
1977	0.663	0.494	0.91
1978	0.636	0.471	0.866
1979	0.634	0.475	0.862
1980	0.63	0.471	0.856
1981	0.606	0.459	0.818
1982	0.587	0.438	0.792
1983	0.593	0.453	0.797
1984	0.577	0.433	0.775
1985	0.572	0.434	0.768
1986	0.574	0.437	0.774
1987	0.579	0.439	0.816
1988	0.556	0.424	0.747
1989	0.568	0.436	0.768
1990	0.538	0.41	0.727
1991	0.531	0.405	0.708
1992	0.529	0.404	0.715
1993	0.511	0.388	0.693
1994	0.513	0.39	0.694
1995	0.531	0.405	0.724
1996	0.49	0.372	0.656
1997	0.518	0.393	0.722
1998	0.481	0.364	0.643
1999	0.474	0.359	0.639
2000	0.466	0.35	0.628
2001	0.461	0.344	0.623
2002	0.459	0.341	0.625
2003	0.457	0.341	0.627
2004	0.472	0.353	0.654
2005	0.47	0.347	0.664
2006	0.465	0.342	0.652
2007	0.462	0.338	0.657
2008	0.45	0.329	0.641
2009	0.437	0.315	0.619
2010	0.434	0.311	0.619
2011	0.433	0.308	0.629
2012	0.422	0.296	0.614

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