Graph

American Bittern
(Botaurus lentiginosus)

Listing of the individual data points that make up the graph
Year	Annual Index	Lower limit	Upper limit
1970	0.682	0.528	1.04
1971	0.779	0.619	1.13
1972	0.699	0.567	0.944
1973	0.68	0.548	0.875
1974	0.896	0.686	1.34
1975	0.842	0.664	1.21
1976	0.733	0.567	1.05
1977	0.549	0.442	0.732
1978	0.611	0.502	0.778
1979	0.762	0.598	1.08
1980	0.52	0.431	0.677
1981	0.524	0.433	0.661
1982	0.492	0.413	0.61
1983	0.579	0.471	0.751
1984	0.667	0.53	0.915
1985	0.556	0.458	0.722
1986	0.58	0.479	0.732
1987	0.568	0.456	0.76
1988	0.474	0.39	0.605
1989	0.414	0.356	0.496
1990	0.511	0.43	0.636
1991	0.479	0.405	0.591
1992	0.468	0.402	0.565
1993	0.445	0.383	0.532
1994	0.506	0.431	0.608
1995	0.509	0.434	0.605
1996	0.474	0.404	0.563
1997	0.522	0.442	0.635
1998	0.489	0.418	0.588
1999	0.557	0.471	0.664
2000	0.529	0.454	0.626
2001	0.508	0.437	0.608
2002	0.416	0.356	0.493
2003	0.45	0.384	0.543
2004	0.498	0.417	0.62
2005	0.604	0.501	0.778
2006	0.485	0.406	0.589
2007	0.552	0.452	0.719
2008	0.585	0.484	0.72
2009	0.478	0.404	0.58
2010	0.515	0.435	0.636
2011	0.638	0.52	0.803
2012	0.554	0.448	0.714
2013	0.588	0.475	0.76
2014	0.633	0.512	0.813
2015	0.558	0.451	0.714
2016	0.501	0.407	0.655

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