Year	Percent
1950	10.02051
1955	10.13936
1960	10.1674
1965	10.60995
1970	9.51516
1975	9.57374
1980	8.02457
1985	4.42397
1990	5.42159
1995	4.63669
2000	5.84248
2005	4.40586
2010	2.81168
2015	3.54645
2020	2.84534
2025	3.18159
2030	3.41115
2035	3.43575
2040	3.25705
2045	3.15285
2050	3.00017
2055	2.9364
2060	2.9763
2065	3.02974
2070	3.0704
2075	3.07642
2080	3.07446
2085	3.09948
2090	3.15894
2095	3.24623
2100	3.32543