Promedio anual (ducados)

https://estadisticas.bcrp.gob.pe/estadisticas/series/anuales/resultados/CD12573DA/html

Fecha	Préstamos tomados por la corona, 1520-1556 (en millones) - Promedio anual (ducados)
1532	413,8
1533	n.d.
1534	n.d.
1535	n.d.
1536	n.d.
1537	n.d.
1538	n.d.
1539	n.d.
1540	n.d.
1541	n.d.
1542	543,8
1543	n.d.
1544	n.d.
1545	n.d.
1546	n.d.
1547	n.d.
1548	n.d.
1549	n.d.
1550	n.d.
1551	933,1
1552	n.d.
1553	n.d.
1554	n.d.
1555	n.d.
1556	1928,8

( ! ) Notice: Undefined offset: 1 in /var/www/html/estadisticas/application/controllers/AnualesController.php on line 1208
Call Stack
#	Time	Memory	Function	Location
1	0.0000	411856	{main}( )	.../index.php:0
2	0.0051	975024	Zend_Application->run( )	.../index.php:30
3	0.0051	975024	Bootstrap->run( )	.../Application.php:366
4	0.0051	975024	Zend_Controller_Front->dispatch( )	.../Bootstrap.php:101
5	0.0058	993896	Zend_Controller_Dispatcher_Standard->dispatch( )	.../Front.php:954
6	0.0097	1199000	AnualesController->dispatch( )	.../Standard.php:308
7	0.0098	1201616	AnualesController->indexAction( )	.../Action.php:516
8	0.0138	1228128	getBrowser( )	.../AnualesController.php:1227