Year	Percent
1950	8.78836
1955	9.69589
1960	8.06841
1965	9.51142
1970	10.47063
1975	13.44323
1980	13.06331
1985	11.81911
1990	10.45771
1995	10.38751
2000	11.73206
2005	12.82091
2010	10.60787
2015	9.10853
2020	7.88231
2025	8.18988
2030	8.40445
2035	8.11634
2040	7.29022
2045	6.42854
2050	5.97914
2055	5.95031
2060	5.97949
2065	5.82478
2070	5.49432
2075	5.15108
2080	4.98545
2085	5.0055
2090	5.06727
2095	5.03842
2100	4.90478