Year	Percent
1950	10.02523
1955	9.89926
1960	9.77651
1965	11.26575
1970	9.08926
1975	6.83957
1980	4.74398
1985	4.05935
1990	6.56574
1995	5.09277
2000	5.29692
2005	4.50055
2010	2.78024
2015	2.52476
2020	2.8403
2025	3.33851
2030	3.3934
2035	3.01823
2040	2.87679
2045	2.95815
2050	3.11773
2055	3.21315
2060	3.21188
2065	3.19005
2070	3.22039
2075	3.29533
2080	3.39023
2085	3.47058
2090	3.53943
2095	3.5952
2100	3.66674