_id	year	amb_num	amb_per	amb_rate	reference
1	1990	1535.442516	0.013399796	14.79891919	screencapture_ghdx_healthdata_25.01.2021.pdf
2	1991	1545.950766	0.013528795	14.53573577	screencapture_ghdx_healthdata_25.01.2021.pdf
3	1992	1564.863951	0.013758515	14.35896505	screencapture_ghdx_healthdata_25.01.2021.pdf
4	1993	1591.388058	0.013956728	14.28764599	screencapture_ghdx_healthdata_25.01.2021.pdf
5	1994	1622.002873	0.014064715	14.29144908	screencapture_ghdx_healthdata_25.01.2021.pdf
6	1995	1650.231282	0.014370499	14.28506318	screencapture_ghdx_healthdata_25.01.2021.pdf
7	1996	1672.228323	0.014580727	14.22720261	screencapture_ghdx_healthdata_25.01.2021.pdf
8	1997	1702.958851	0.014951464	14.23274518	screencapture_ghdx_healthdata_25.01.2021.pdf
9	1998	1746.081984	0.015346164	14.33015153	screencapture_ghdx_healthdata_25.01.2021.pdf
10	1999	1793.337347	0.015921963	14.46248322	screencapture_ghdx_healthdata_25.01.2021.pdf
11	2000	1834.983866	0.016325377	14.56373653	screencapture_ghdx_healthdata_25.01.2021.pdf
12	2001	1898.385441	0.017109645	14.84729006	screencapture_ghdx_healthdata_25.01.2021.pdf
13	2002	1989.206404	0.018152563	15.33276339	screencapture_ghdx_healthdata_25.01.2021.pdf
14	2003	2075.866329	0.019187195	15.77054201	screencapture_ghdx_healthdata_25.01.2021.pdf
15	2004	2165.782562	0.020288152	16.22471239	screencapture_ghdx_healthdata_25.01.2021.pdf
16	2005	2247.594319	0.021398577	16.60733258	screencapture_ghdx_healthdata_25.01.2021.pdf
17	2006	2330.054344	0.022533801	16.97811977	screencapture_ghdx_healthdata_25.01.2021.pdf
18	2007	2443.856679	0.023894605	17.55732979	screencapture_ghdx_healthdata_25.01.2021.pdf
19	2008	2559.951093	0.02528671	18.12977096	screencapture_ghdx_healthdata_25.01.2021.pdf
20	2009	2663.338777	0.026348389	18.58998276	screencapture_ghdx_healthdata_25.01.2021.pdf
21	2010	2752.3388	0.027062724	18.93168651	screencapture_ghdx_healthdata_25.01.2021.pdf
22	2011	2809.101579	0.027603079	19.03966212	screencapture_ghdx_healthdata_25.01.2021.pdf
23	2012	2866.686219	0.028162091	19.14507159	screencapture_ghdx_healthdata_25.01.2021.pdf
24	2013	2915.258487	0.02840703	19.18402383	screencapture_ghdx_healthdata_25.01.2021.pdf
25	2014	2971.756448	0.028732167	19.27054896	screencapture_ghdx_healthdata_25.01.2021.pdf
26	2015	3020.854896	0.028883881	19.30650686	screencapture_ghdx_healthdata_25.01.2021.pdf
27	2016	3060.788336	0.028889894	19.26607157	screencapture_ghdx_healthdata_25.01.2021.pdf
28	2017	3110.256186	0.02894107	19.26865198	screencapture_ghdx_healthdata_25.01.2021.pdf
29	2018	3259.013436	0.029877052	19.8962043	screencapture_ghdx_healthdata_25.01.2021.pdf
30	2019	3499.048402	0.031583857	21.07464673	screencapture_ghdx_healthdata_25.01.2021.pdf