Figure 5.1: Trends for the abundance of butterflies of the wider countryside on UK farmland, 1990 to 2022


Trends for the abundance of butterflies of the wider countryside on UK farmland, 1990 to 2022
Year	Unsmoothed index (1990 = 100)	Smoothed index	Smoothed index lower 95% confidence interval	Smoothed index upper 95% confidence interval
1990	100.00	110.02	98.68	121.36
1991	123.87	109.22	98.74	119.69
1992	127.05	108.41	98.72	118.11
1993	79.25	107.61	98.60	116.61
1994	92.26	106.80	98.40	115.20
1995	107.64	106.00	98.11	113.88
1996	121.33	105.20	97.74	112.65
1997	137.40	104.39	97.29	111.49
1998	104.23	103.57	96.75	110.40
1999	95.06	102.76	96.16	109.37
2000	101.62	101.95	95.51	108.40
2001	92.90	101.16	94.83	107.48
2002	92.04	100.37	94.13	106.61
2003	113.76	99.61	93.43	105.79
2004	111.42	98.86	92.71	105.01
2005	99.31	98.14	92.01	104.26
2006	98.86	97.44	91.31	103.56
2007	72.78	96.77	90.64	102.90
2008	68.87	96.15	90.00	102.30
2009	97.72	95.57	89.38	101.75
2010	101.39	95.02	88.78	101.27
2011	92.04	94.52	88.19	100.85
2012	57.94	94.05	87.60	100.50
2013	109.14	93.62	87.01	100.23
2014	102.80	93.21	86.38	100.04
2015	95.28	92.82	85.72	99.93
2016	71.45	92.46	85.00	99.92
2017	90.78	92.10	84.21	100.00
2018	110.15	91.76	83.35	100.17
2019	110.15	91.42	82.40	100.43
2020	102.80	91.07	81.36	100.78
2021	88.72	90.73	80.23	101.22
2022	83.37	90.38	79.01	101.74

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