Where can we download all the Amendment acts related to�The Payment of Gratuity Act, 1972 and The Payment of Gratuity (Central) Rules, 1972-1

Dear sir,
We want to download�all the�Payment of Gratuity (Amendment) Acts what are the Amendment acts made till now.
We have tried to download from�Home.
But we have failed
Mainly we want to get below Amendment Acts
(i) The Payment of Gratuity (Amendment) Act 1984, (25 of 1984)
(ii) The Payment of Gratuity (Second Amendment) Act 1984, (26 of 1984)
(iii) The Payment of Gratuity (Amendment) Act 1987, (22 of 1987)
(iv) The Payment of Gratuity (Amendment) Act 1994, (34 of 1994)
(v) The Payment of Gratuity (Amendment) Act 1998, (11 of 1998)
(vi) The Payment of Gratuity (Amendment) Act 2009, (47 of 2009)
(vii) The Payment of Gratuity (Amendment) Act 2010, (15 of 2010)
(viii) And, if any other Amendment acts are available related to�The Payment of Gratuity Act, 1972
(a) Where can we download all the Amendment acts related to�The Payment of Gratuity Act, 1972 and The Payment of Gratuity (Central) Rules, 1972-1
(b) If all the Payment of Gratuity (Amendment) Acts are available, Please provide the same.
(c) How can we confirm above mentioned (Amendment) Acts only made till now and no other (Amendment) Acts are available
Please clarify
Thanks with Regards,
T.Thirumurugan.