Year	Percent
1950	11.29857
1955	11.68852
1960	10.64156
1965	7.82317
1970	7.26735
1975	9.61849
1980	10.48311
1985	10.32484
1990	10.09525
1995	10.25892
2000	12.65242
2005	13.19854
2010	10.99106
2015	6.93343
2020	5.46844
2025	5.72671
2030	6.59453
2035	6.2991
2040	5.44236
2045	4.55625
2050	4.12419
2055	4.18398
2060	4.41482
2065	4.45526
2070	4.24899
2075	4.0051
2080	3.92931
2085	4.0754
2090	4.29913
2095	4.41787
2100	4.3673