Sys.setlocale("LC_TIME","C")
data.frame(t=(PI %>% last(.,8) %>% index() %>% format(., "%b %Y")), d=(PI %>% last(.,8) %>% as.vector()))
Sys.setlocale("LC_TIME", "ja_JP.UTF-8")
1 Jun 2020 20032.7
2 Jul 2020 20173.9
3 Aug 2020 19624.3
4 Sep 2020 19762.2
5 Oct 2020 19627.8
6 Nov 2020 19386.2
7 Dec 2020 19499.2
8 Jan 2021 21453.9
2020JUL31
1 Nov 2020 19435.0
2 Dec 2020 19562.2
3 Jan 2021 21504.5
4 Feb 2021 19955.1
5 Mar 2021 24142.4
6 Apr 2021 20853.2
7 May 2021 20388.2
8 Jun 2021 20414.3
2020SEP15
1 Dec 2020 19562.2
2 Jan 2021 21504.5
3 Feb 2021 19955.1
4 Mar 2021 24142.4
5 Apr 2021 20848.2
6 May 2021 20404.6
7 Jun 2021 20441.8
8 Jul 2021 20667.7
then,
Jun 2020 20032.7
Jul 2020 20173.9
Aug 2020 19624.3
Sep 2020 19762.2
Oct 2020 19628.7
Nov 2020 19386.3
Dec 2020 19491.3
Jan 2021 21462.2
Feb 2021 19945.6
---------------------
Mar 2021 20120 (2021 MAR 21242.06)
Apr 2021 19995
May 2021 20066
Jun 2021 20185
Jul 2021 20254
Aug 2021 20316
Sep 2021 20369
Apr 2021 19995
May 2021 20066
Jun 2021 20185
Jul 2021 20254
Aug 2021 20316
Sep 2021 20369
Feb 2021 19945.6
-------------------------
Apr 2021 20150
May 2021 20066
Jun 2021 20185
Jul 2021 20254
Aug 2021 20316
Sep 2021 20369
Oct 2021 20423
May 2021 20804.2
Jun 2021 20659
Jul 2021 20733
Aug 2021 20919
Sep 2021 21229
Oct 2021 21419
Nov 2021 21106
Dec 2021 21261
Jan 2022 21404
2021SEP15
Aug 2021 20740 ±34
Sep 2021 21229 ±39
Oct 2021 21419 ±42
Nov 2021 21106 ±44
Dec 2021 21261 ±46
Jan 2022 21404 ±47
Feb 2022 21469 ±48
Mar 2022 21553 ±49
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