Figure 3.1: Trends for the abundance of butterflies of the wider countryside on farmland in England, 1990 to 2022


Trends for the abundance of butterflies of the wider countryside on farmland in England, 1990 to 2022
Year	Unsmoothed index (1990 = 100)	Smoothed index	Smoothed index lower 95% confidence interval	Smoothed index upper 95% confidence interval
1990	100	109.07	95.77	122.36
1991	120.78	107.84	96.11	119.58
1992	125.6	106.61	96.17	117.04
1993	75.51	105.37	95.97	114.77
1994	89.95	104.14	95.52	112.76
1995	105.19	102.93	94.86	111
1996	116.41	101.7	94	109.41
1997	133.04	100.45	92.96	107.93
1998	100	99.15	91.78	106.52
1999	89.13	97.85	90.53	105.16
2000	93.97	96.57	89.26	103.87
2001	87.1	95.33	88.02	102.64
2002	85.7	94.15	86.83	101.48
2003	105.92	93.05	85.71	100.39
2004	103.99	92.02	84.67	99.37
2005	91.62	91.08	83.72	98.44
2006	92.26	90.25	82.89	97.61
2007	68.87	89.56	82.21	96.92
2008	65.01	89.05	81.7	96.4
2009	93.33	88.72	81.38	96.05
2010	95.94	88.54	81.22	95.87
2011	87.5	88.52	81.21	95.83
2012	53.7	88.65	81.34	95.95
2013	103.99	88.91	81.6	96.23
2014	100.69	89.27	81.91	96.64
2015	93.33	89.71	82.22	97.2
2016	70.47	90.2	82.49	97.91
2017	89.13	90.74	82.66	98.82
2018	110.4	91.29	82.66	99.93
2019	109.64	91.83	82.41	101.25
2020	101.85	92.34	81.88	102.8
2021	86.7	92.82	81.05	104.59
2022	84.53	93.29	79.96	106.63

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