You can get up to date data here
https://ssd.jpl.nasa.gov/horizons.cgi#results
Change Ephemerides to orbital elements, go to target body and select spacecraft and then Voyager1, Voyager2.
Then you get an output like this:
► Show Spoiler
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Ephemeris / WWW_USER Mon Jul 29 13:01:23 2019 Pasadena, USA / Horizons
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Target body name: Voyager 1 (spacecraft) (-31) {source: Voyager_1}
Center body name: Sun (10) {source: Voyager_1}
Center-site name: BODY CENTER
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Start time : A.D. 2019-Jul-29 00:00:00.0000 TDB
Stop time : A.D. 2019-Aug-28 00:00:00.0000 TDB
Step-size : 1440 minutes
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Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy(km),Dz(km)}
Center radii : 696000.0 x 696000.0 x 696000.0 k{Equator, meridian, pole}
Keplerian GM : 2.9591220828559093E-04 au^3/d^2
Output units : AU-D, deg, Julian Day Number (Tp)
Output type : GEOMETRIC osculating elements
Output format : 10
Reference frame : ICRF/J2000.0
Coordinate systm: Ecliptic and Mean Equinox of Reference Epoch
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JDTDB
EC QR IN
OM W Tp
N MA TA
A AD PR
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$$SOE
2458693.500000000 = A.D. 2019-Jul-29 00:00:00.0000 TDB
EC= 3.766836830133554E+00 QR= 8.904400956422048E+00 IN= 3.578917620896532E+01
OM= 1.791168554447500E+02 W = 3.384078856083115E+02 Tp= 2444221.974610390142
N = 1.707152563542955E-01 MA= 2.470510166724917E+03 TA= 1.008641202737587E+02
A =-3.218260238350314E+00 AD= 6.684586453809735E+91 PR= 1.157407291666667E+95
2458694.500000000 = A.D. 2019-Jul-30 00:00:00.0000 TDB
EC= 3.766829752699542E+00 QR= 8.904394387056776E+00 IN= 3.578926210823827E+01
OM= 1.791176307246179E+02 W = 3.384072260776182E+02 Tp= 2444221.962810933590
N = 1.707147902540781E-01 MA= 2.470676150675813E+03 TA= 1.008644506906978E+02
A =-3.218266096195094E+00 AD= 6.684586453809735E+91 PR= 1.157407291666667E+95
2458695.500000000 = A.D. 2019-Jul-31 00:00:00.0000 TDB
EC= 3.766822637844027E+00 QR= 8.904387695466617E+00 IN= 3.578934800140727E+01
OM= 1.791184059234373E+02 W = 3.384065664071533E+02 Tp= 2444221.951014237944
N = 1.707143242051412E-01 MA= 2.470842133954394E+03 TA= 1.008647812734897E+02
A =-3.218271953422042E+00 AD= 6.684586453809735E+91 PR= 1.157407291666667E+95
2458696.500000000 = A.D. 2019-Aug-01 00:00:00.0000 TBD
Coordinate system description:
Ecliptic and Mean Equinox of Reference Epoch
Reference epoch: J2000.0
XY-plane: plane of the Earth's orbit at the reference epoch
Note: obliquity of 84381.448 arcseconds wrt ICRF equator (IAU76)
X-axis : out along ascending node of instantaneous plane of the Earth's
orbit and the Earth's mean equator at the reference epoch
Z-axis : perpendicular to the xy-plane in the directional (+ or -) sense
of Earth's north pole at the reference epoch.
Symbol meaning [1 au= 149597870.700 km, 1 day= 86400.0 s]:
JDTDB Julian Day Number, Barycentric Dynamical Time
EC Eccentricity, e
QR Periapsis distance, q (au)
IN Inclination w.r.t XY-plane, i (degrees)
OM Longitude of Ascending Node, OMEGA, (degrees)
W Argument of Perifocus, w (degrees)
Tp Time of periapsis (Julian Day Number)
N Mean motion, n (degrees/day)
MA Mean anomaly, M (degrees)
TA True anomaly, nu (degrees)
A Semi-major axis, a (au)
AD Apoapsis distance (au)
PR Sidereal orbit period (day)