Figure 4.1: Trends for the abundance of butterflies of the wider countryside in the UK, 1976 to 2022


Trends for the abundance of butterflies of the wider countryside in the UK, 1976 to 2022
Year	Unsmoothed index (1976 = 100)	Smoothed index	Smoothed index lower 95% confidence interval	Smoothed index upper 95% confidence interval
1976	100.00	72.73	60.78	84.68
1977	47.32	73.48	62.79	84.16
1978	62.81	74.24	64.64	83.84
1979	71.45	75.02	66.31	83.74
1980	63.10	75.82	67.82	83.83
1981	55.34	76.63	69.16	84.09
1982	95.50	77.42	70.33	84.50
1983	88.31	78.16	71.34	84.98
1984	112.71	78.84	72.19	85.50
1985	72.95	79.45	72.89	86.01
1986	70.63	79.99	73.48	86.50
1987	62.52	80.47	73.98	86.96
1988	60.53	80.89	74.41	87.37
1989	90.36	81.23	74.75	87.71
1990	89.33	81.48	75.00	87.95
1991	100.00	81.60	75.12	88.08
1992	112.20	81.58	75.11	88.06
1993	64.12	81.43	74.96	87.91
1994	71.29	81.16	74.69	87.63
1995	88.51	80.77	74.31	87.23
1996	95.50	80.27	73.82	86.73
1997	102.56	79.66	73.21	86.11
1998	74.99	78.95	72.51	85.40
1999	67.76	78.18	71.73	84.62
2000	72.61	77.37	70.92	83.82
2001	65.77	76.54	70.09	82.99
2002	69.02	75.71	69.26	82.17
2003	82.22	74.90	68.43	81.36
2004	83.75	74.10	67.63	80.57
2005	72.95	73.32	66.85	79.80
2006	73.62	72.59	66.12	79.07
2007	53.83	71.93	65.45	78.40
2008	52.72	71.33	64.85	77.81
2009	73.45	70.83	64.35	77.31
2010	77.09	70.40	63.92	76.88
2011	69.98	70.04	63.55	76.52
2012	44.77	69.75	63.24	76.26
2013	80.35	69.53	62.97	76.09
2014	74.47	69.37	62.71	76.03
2015	69.66	69.24	62.42	76.07
2016	53.33	69.16	62.07	76.24
2017	67.45	69.10	61.62	76.58
2018	86.50	69.05	61.03	77.07
2019	81.10	69.00	60.27	77.73
2020	77.80	68.93	59.31	78.56
2021	63.24	68.86	58.14	79.57
2022	63.24	68.78	56.79	80.76

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