Year	Percent
1950	9.16418
1955	8.39192
1960	7.987
1965	9.26717
1970	11.12498
1975	9.48773
1980	10.92721
1985	12.20174
1990	10.44116
1995	7.9394
2000	8.10311
2005	9.86735
2010	7.30629
2015	5.59074
2020	5.27752
2025	5.42053
2030	5.65197
2035	5.37167
2040	4.94488
2045	4.6872
2050	4.62375
2055	4.71982
2060	4.86729
2065	4.93214
2070	4.8906
2075	4.82607
2080	4.80563
2085	4.85941
2090	4.93519
2095	4.95979
2100	4.92315