Graph

Double-crested Cormorant
(Phalacrocorax auritus)

Additional information on: Christmas Bird Count (CBC)

Listing of the individual data points that make up the graph
Year	Annual index	Lower limit	Upper limit
1970	6.75	4.77	14.1
1971	7.24	5.14	14.3
1972	7.12	5	14.1
1973	7.78	5.59	14.7
1974	8.19	5.92	15.1
1975	8.31	6.04	15.1
1976	8.56	6.19	15.8
1977	9.83	7.27	16.7
1978	9.93	7.39	16.8
1979	11.8	8.8	19.1
1980	12.3	9.18	19.6
1981	15.4	11.4	23.9
1982	17.8	13.3	26.7
1983	18.4	13.6	28.2
1984	24.2	17.8	37.5
1985	24.8	18.3	36.5
1986	31.7	22.7	47.7
1987	34.7	25.1	51.6
1988	36.8	26.1	56
1989	40.3	28.5	60.6
1990	45.4	32.5	69.1
1991	57.4	40.7	87.1
1992	46.2	33.3	70.7
1993	53.4	38.5	79.7
1994	55	39.3	82.1
1995	50.4	37	72.8
1996	59.3	43.1	86.7
1997	56	40.2	85.2
1998	67.6	48.8	103
1999	78.3	55.1	127
2000	77.9	54.4	125
2001	79.9	57.1	126
2002	90.5	63.9	141
2003	88.6	61.5	163
2004	91.6	64	147
2005	72.6	51.8	120
2006	71.7	53.1	102
2007	83.4	60.3	124
2008	74.3	55.1	107
2009	106	74.5	171
2010	71	52.6	102
2011	86.6	63.4	128
2012	86.4	63.9	125
2013	95.5	68.9	146
2014	94.8	69.7	141
2015	94.2	69.4	141
2016	92.9	68	152

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