OECD SDMX API query results for Doctors indicator (Physicians, practising, per 1 000 inhabitants)
Query URL: https://sdmx.oecd.org/public/rest/data/DSD_HEALTH_EMP_REAC@DF_PHYS/EST+HUN+LUX+MEX+POL.HSE.10P3HB._Z._Z.PHYS._Z.P._Z?startPeriod=1991&endPeriod=2010
Structure usage: agencyID=OECD.ELS.HD id=DSD_HEALTH_EMP_REAC@DF_PHYS version=1.1
SeriesKey fixed dimensions in query: MEASURE=HSE; UNIT_MEASURE=10P3HB; AGE=_Z; SEX=_Z; HEALTH_PROF=PHYS; WORKER_STATUS=_Z; HEALTH_PROF_ACTIVITY_STATUS=P; PRICE_BASE=_Z
Extracted observations (REF_AREA, TIME_PERIOD, ObsValue):
REF_AREA,TIME_PERIOD,OBS_VALUE
EST,1991,3.54
EST,1995,3.19
EST,2000,2.94
EST,2005,3.14
EST,2010,3.24
HUN,1991,3.03
HUN,1995,3
HUN,2000,2.68
HUN,2005,2.78
HUN,2010,2.87
LUX,1991,2.02
LUX,1995,2.24
LUX,2000,2.15
LUX,2005,2.55
LUX,2010,2.77
MEX,1991,1.15
MEX,1995,1.64
MEX,2000,1.62
MEX,2005,1.76
MEX,2010,1.99
POL,1991,2.17
POL,1995,2.32
POL,2000,2.22
POL,2005,2.14
POL,2010,2.19

All observations returned for each country (1991-2010) with the same series key:
EST: 1991:3.54, 1992:3.26, 1993:3.21, 1994:3.2, 1995:3.19, 1996:3.15, 1997:3.24, 1998:3, 1999:3.02, 2000:2.94, 2001:2.78, 2002:2.96, 2003:3, 2004:3.02, 2005:3.14, 2006:3.18, 2007:3.26, 2008:3.34, 2009:3.28, 2010:3.24
HUN: 1991:3.03, 1992:3.01, 1993:2.96, 1994:3, 1995:3, 1996:3.04, 1997:3.08, 1998:3.08, 1999:3.1, 2000:2.68, 2001:2.89, 2002:3.19, 2003:3.25, 2004:3.34, 2005:2.78, 2006:3.04, 2007:2.8, 2008:3.09, 2009:3.02, 2010:2.87
LUX: 1991:2.02, 1992:2.08, 1993:2.13, 1994:2.16, 1995:2.24, 1996:2.31, 1997:2.4, 1998:2.44, 1999:2.49, 2000:2.15, 2001:2.21, 2002:2.26, 2003:2.38, 2004:2.42, 2005:2.55, 2006:2.61, 2007:2.68, 2008:2.72, 2009:2.7, 2010:2.77
MEX: 1991:1.15, 1992:1.31, 1993:1.45, 1994:1.55, 1995:1.64, 1996:1.64, 1997:1.68, 1998:1.69, 1999:1.7, 2000:1.62, 2001:1.51, 2002:1.52, 2003:1.57, 2004:1.65, 2005:1.76, 2006:1.88, 2007:1.92, 2008:1.94, 2009:1.97, 2010:1.99
POL: 1991:2.17, 1992:2.18, 1993:2.22, 1994:2.28, 1995:2.32, 1996:2.35, 1997:2.36, 1998:2.33, 1999:2.26, 2000:2.22, 2001:2.27, 2002:2.3, 2003:2.43, 2004:2.29, 2005:2.14, 2006:2.18, 2007:2.19, 2008:2.16, 2009:2.17, 2010:2.19
RANDOMTAG12345